I am a bit late to the party as I did have to work and I crashed when I got home yesterday. But here are my quick thoughts on the direct.
Note Well: I'm watching the PAL/EU version of the direct so there might be very slight differences to the NOA one.
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The World Ends With You
Not my cup of tea but I hope it's properly ported to Switch and not just a rush job. Azure Gunvolt Striker Pack is an example of a bad port to Switch of a 3DS game. Sure the Switch port looks great but it still feels liek a 3DS game. Small cropped gameplay area, simple controls, designed for shorter bursts of play, not longer sessions (I'd have preferred 30m to 1h insread of the 10m to 20m that AG is working towards). I am glad that touch controls are one option here still. Nintendo needs to make more use of the Switch touch screen as it's actually good, unlike the WiiU one that was average at best.
More Pokken characters
Fine by me. Glad to see the game getting more love. I'm not a fan but it's fans will be happy with this. I still don't think it's eSport worthy though as a game but who knows it might get enough fans to do that.
Dragon Quest Builders
Totally check this one out. I played the demo on the PS4. Everyone here knows I'm a huge Dragon Quest fan. This game however? I think it's 75% minecraft and 25% Dragon Quest. Not sure I'll get this one though because backlog. The demo existing is great though for all the obvious reasons.
Kirby Star Allies
I am not really a Kirby fan, however this game interests me a lot more than the previous Kirby games on TV consoles as there's no weird console specific gimmick. It's more like the Kirby of old (think Adventure and Super Star, not Land). I probably will not pre-order this unless there's a great pre-order bonus, but on the day I might jusat get it. I do like the friend ability combos though. Feels like a suped up version of the allies from Super Star. I do like that a lot. As long as it's equally as fun in silgle player mode that is.
Hyrule Warriors
Lets hope this fixes all the issues that the WiiU and 3DS versions had. Fire Emblem Warriors fixed up a few of the issues but not all of them. Fire Emblem Warriors is an alright game, it's just not a great musou game. Not even close to great. Hyrule Warriors was not either. I think most people give both games a pass because of nostalgia to the characters and IPs being used in both games. Having all the content from both the WiiU and 3DS versions is a plus though. I will probably get this game one day even though nothing in the Direct here says that any of the flaws in Hyrule Warriors will be fixed up for the Switch port.
Mario Tennis Aces
If this is like Mario Power Tennis on Gamecube I will pre-order this.
If this is like Mario Untra Smash for WiiU, I will avoid it like the plague.
The WiiU game here is the first pre-order in a long time I cancelled. It was just so terrible in every way.
Story mode in Aces is nice but without a proper tournament format (the same thing that is real tennis in the real world), the game will be a flop. I will totally be keeping my eye on this. I hope it's good and not a flop. Also this new approach crap (tennis puns aside) is potentially bad. Nintendo need to realise what made their old games good and build upon them not just change everything. Don't throw the baby out with the batth water.
Y's8
I think I played the demo for this on the PS4 and it didn't impress me. However it's not a bad idea to port this to the Switch. If it plays as well as the PS4 port and looks relatively ok, then it'll be fine. I just think the combat style and what modern Y's games are are polarising. Love or hate relationship. Those who have only played the old Ys games on NES and SNES will be in for a shock though. The modern Y's games are quite different in combat style and other things.
Mario Odyssey DLC
Pointless online modes that people will find ways to exploit. I won't ever be playing this. Should not have been made in my opinion.
The new outfits and filters for snapshot mode are very welcome though. I think snapshot mode is one of the best features of the game. I'd like to see other games have similar.
SNK Heroines
I won't be getting this for the obvious reasons. Sure XC2 is fan service of a similar nature but at least it has a great story surrounding it all. This game is just blatent fan service of the questionable type with seemingly no redeemable features.
Art of Fighting 2
The NEO GEO fans will appreciate this. Everyone else can just move on to more interesting things.
Mario + Rabbids DLC
I guess why not. It's as out there as the game is. Also Grant Kirkhope did help to make the game and eh knows what makes a good DK story better than almost anyone else (being part exRARE / Playtonic crew). It's separate to the main story so it's fine in my books.
The music for that sounds amazing (Thanks Grant Kirkhope) and it's a good take on the old DK captures Peach thing.
Pay Day 2
Not sure if this needs to be on Switch. However it is 1000x better than the first game and has a decent following. So if the port is done well it might get a decent number of sales.
Fe
Feels like a Yooka-Laylee clone. Might be good to scratch that 3D platformer itch. Nothing wrong with cloning something as amazing as Yooka-Laylee but if it's not a great game in it's own right, it'll be eaten alive by the critics who base their reviews on hype and opinion usually and not on fact. I think 3D platforming fans should take a look at this. I know I will. But I probably will not be getting it day 1. Will I ever get it? Not sure? It's not at the top of my list to get I can say that.
Celeste
If the content is there and the price is right It's worth a look. But I do think games too retro inspired get passed by. There needs to be at least some modern hooks to get us wanting to play it.
I think it'll be quite the challenging game. Maybe not Super Meat Boy hard but not easy either, unless you use assist mode.
DKC - Tropical Freeze
I'm glad this was ported to the Switch. A lot of people I know wanted this ported. Myself included. Polarising game is is but I'll certainly be pre-ordering it. Even though it's way less accessible than the SNES trilogy it's still a great game and fans of the genre should like it. A smart move by Nintendo to port this.
Funky Kong looks like the assist mode for this game. Which is not a bad thing in my eyes. Helps to make the game more accessible to a wider audience.
Dark Souls
This shouldn't be on Switch.
I know many people will disagree wth me, but my point is not every game needs to be on the Switch. Dark Souls as a thing found it's home on PC and PS. The PS fans mostly love it. It's what many PS fans want. Nintendo fans though? I don't think the average Nintendo fan wants a super hard (note well - I understand what kind of hard DS is) of this type. I don't know anyone who wanted this ported to the Switch. If I ever wanted this, I'd just get it on PS. I think most of the people I know are the same as they already have it on PS. I know someone who bought a PS4 specifically for DS3 and BB.
So yeah that's my opinion on Switch DS. However I will be interested to see how well the port is done from a technical point of view.