Shiny has a crush on Rom and I think he's cool so very very good chance you see him around at some point, either on a shirt or...
I can only speak for myself but I think I'd be generally more interested in seeing older or obscure characters (heroes, villains, whatever) added. It's not that I think there's anything wrong with later or popular ones (Wolverine in a ton of films isn't making me groan whenever I hear Wolverine is in a film) but it's more like hearing some of the 95% of classic music that never became mainstream famous because of an important tastemaker, or appearing in a Looney Toons cartoon or a famous film's scene or advertisement.
Might be this'd get people arguing "_____ isn't obscure!" but even there, that argument might be like someone who plays in an orchestra thinking a composer isn't obscure when they're getting a lot more exposure over a lot of years relative to everyone else that "The Mainstream" is trying to sell too.
I think there's some great stuff in there (without going as far to say it's ALL great) and the novelty of being experienced for the first time can add a lot.
(Very, VERY tempted to end this a picture of some image of a Literally Who villain that doesn't even have fanart, but this isn't intended as a shitpost, so maybe next time)