I have faith that they'll be able to make the Vulture interesting enough. I've been very excited for this film for a long time already, and after having seen the trailer I'm even more stoked for it. Spider-Man is one of my all time favourite super heroes (maybe even my definite #1), and after having seen Tom Holland play him in Civil War I've been a great fan of him in that role. I've come to prefer him as Peter Parker/Spider-Man even more than Tobey Maguire (who was also great of course).
Anyway, the armpit webs are an amazing throwback that I honestly never expected to see return, so I'm happy about that. And speaking of references to the old comic books, I look forward to seeing Spider-Man use the light that projects the symbol of his mask to show villains that he's approaching.
The one thing that gets me worried after having watched the trailer is that Iron Man might have a too large role. I really don't want it to feel like a Spider-Man & Iron Man film, but rather just a Spider-Man film. We've seen plenty of Tony Stark in the MCU already. Sure we all love him, but I don't want him to take over this film too much. Let him be a mentor of sorts. That's what I think.