Yes. First off that's a lot of shit to remember. Secondly there are more things to do in the game.
Thirdly I'm pretty sure the new fatalities are more elaborate and would take a lot of space & time to create. I personally don't wanna wait years for the next game.

The Hara Kiri moves are a great idea. I always hated getting killed by someone else. This way I can just off myself if I lose.

Though team fatals are a good idea MK has always shown that each character can defeat any other and doing that may take away from it.

As long as a third of the roster has a secret 3rd fatality, that would rock like crazy!

3 fatalities would be awesome but im just fine with 2. Also the Hari Kari move seems awesome too, id rather have that then a 3rd fatality.

I would like four fatalities shake em' up fries and a choclate shake to go lol