That guy has every right to not buy the game if he doesn't like the roster as it stands, but to say the game should be sent straight to hell? I hate to sound negative, but some folks just can't be satisfied. I mean, you have 25 base characters, and you despise each and every one of them enough that you're disgusted with the game?
When you have a limited roster size, there's going to be some winners and some losers. You really can't please everyone by giving everyone their 'main'. Then you'd have a roster approaching 60-70 characters, and I fear such a roster size would ultimately result in either A). Ridiculous development time and/or B). A lack of quality in all the fighters due to time constraints.
I guess I'm a lucky one because it looks like Jade and Frost are making it in. Which I'm grateful for. But, had it been the other way around, and neither were revealed (assuming the leak is 100% accurate), I'd have been disappointed for sure, but I also would still buy the game and find some different fighters to enjoy. I mean, it's Mortal Kombat. It's clear a lot of attention to detail has gone into this iteration, a lot of work, a lot care. To dismiss it just because Liu Kang, or Rain, or Jade isn't in it...seems petty, sadly. :/