As far as Tira fans go, I suppose there are enough to ask the development team to add her in and them to comply even if it wasn't in the way her fans would want.
And I'd like to point out also, yeah I can understand if people are mad they gotta pay extra for their favorite character, but...maybe it is cause I'm just used to it by now (with Nethwrrealm games mainly) but I just don't see it as big a controversy as it was made out to be.