The simple answer in most cases is: they probably think it would not sell that well.
Funny animals from N64 era are probably not the saffest bet these days. Look at Ratchet and Clanck or even Jak and Dexter.
The devs must think people do not care about antropomorphic animals as they used to anymore.
Are they right?
I really don´t know.
In Gears case, they are developing a new game, or multiple ones, they will come out as megaton exclusives for some convention or event.









