While it sucks Carbine isn't able to provide options for all, what matters is that they're providing some options and hopefully working to keep things fair between them. I myself will gladly try 20 mans to see how it is, because I even felt that 10 man was too small. I always felt that 15 was the right number for small raid groups (and why I had so much fun in SW:TOR's 16 man raids). Small enough to where you could get to know everyone, but large enough so that newcomers don't blatantly stick out like a sore thumb. Deaths are much more meaningful yet a couple are still allowed.