Sure, there are plenty of great feeder roaches out there! Some good ones are Nauphoeta cinera, (Lobster roach), Paraplecta sp, (Little Kenyan roach), Paratemnopteryx couloniana, (Red goblin roach), Pycnoscelus surinamensis, (Surinam roach), plus many others, take your pick man!
But you gotta pre-kill them for most predators, or else they burrow down into the substrate. Plus the jaws on a large larva could seriously hurt some predatory inverts if they are given the chance to fight back.
True true, but for most/all t's there isn't really a problem with them getting hurt. And most t's I have will eat superworms right when I drop them in front of the t. And pre killing isn't really an inconvenience to me. Though, with all that said, I'd switch to roaches in a heartbeat lol. I'm just not allowed to have any because my mom DESPISES them.