Pterodactyl
Plus on block.
Wether or not you think he needs to be in the game from any standpoint doesn't matter.I just don't feel like Shang Tsung is useful to the story, Shinnok can replace him and Quan Chi story wise he's more powerful ... dead ones who can make a comeback with a very interesting roll for the story are Kitana and Liu Kang. I just have this feeling that they're focusing on the story mode this time more than what fans want I hope they get it right cause I can't wait for the story mode
They can just write characters in for no reason if they want, and come up with something that actually makes sense.
Quan Chi was not supposed to be in MK9, chronologically, even with Raiden going back, but they decided to put him in and give him a role anyway.
I have a feeling they aren't focusing on story mode more than the actual gameplay because we've seen an almost complete overhaul on the game from a gameplay standpoint as well as many explanation videos going in depth on the seemingly complicated and diverse variation system.
Characters being more powerful than others in certain roles is not a reason to leave them out, as there are plenty of characters better than others at specific things in MK.