They say tails is in. Someone said knuckles and shadow may appear. But Amy NEEDS to be in it. It's made by Sonic & the black knight people. The one thing I loved on that game is the fact Sonic and Amy were dating. This is meant to be fun and light hearted. It's the perfect time to add more Sonic & Amy to games.
I'm not saying make her playable. Just in cut scenes will do. Plus personality wise she'd be the best one to comment on the Wisps too as she has the most "Awww puppy" like moments about her. As well as that it's aimed at kids rights? Well girls need a character to enjoy too and that's Amy.
Honestly I like Shadow but he doesn't need to be in this the way Amy does. Same with knuckles really and knuckles is my favourite character BUT Amy is the character for this game if they don't include i'll be disappointed