1st Question I am not at all a picky eater. I'll eat anything as long as its not gonna make me sick (i.e raw meat, rotten eggs etc). There are a few things I don't like, like peanut butter, mushrooms, & all kinds of beans, but that's not a problem in my house My dad is like that too and we usually go out to eat at buffets just to taste stuff. My mother & sister are "super-tasters", meaning they're taste buds are very sensitive and will even taste the flavor of things that seem not to have a taste, like celery & lettuce. This makes them very picky eaters.
2nd Question Umm I'm not really sure about it. I guess as long as it smells good, I'll be alright. I've never seen a dish that looks AND smells disgusting.
3rd Question Ab-so-lutely! I don't mind mixing different foods at all; In fact, I prefer it! Some foods are too bland for me to eat without something else. Or I could make something good and make it better! For example, has anyone ever tried eating mashed potatoes, mac & cheese, and bbq chicken together? That stuff taste delicious!