May I offer tushanshu? We meet all your requirements listed and we've got about 60 characters currently though we're trying to grow! Our overarching metaplot is going through a big shift towards exploration and world building with lots of intrigue and adventure, which Steve would be great at. We also have MCU Bucky and Darcy in game, as well as some other variety Marvel casts (comics and animated).

Our game ad is HERE and a new Test Drive Meme has gone up HERE.