If they leave out the 3d crew, I wont buy the game. Simple as that. For me, one of the things that set SH3 apart from other "lesser" games was the realism...and the crew went a long way to making it as realistic as possible. Who wants a ghost sub???!!
I suspect most people who don't want a 3d crew have old/poor rigs. Sorry, but it's up to you to keep up with the times...