TNA isn't doing anything different than WWF/E or WCW, as far as getting names.
Some names get big, some get lost in the shuffle.
Taz got lost in the shuffle in WWF. Goldberg became human (and I liked that, apparently he didn't). Scott Steiner got a push, then got nothing.
Dudleyz elevated the tag division to it's peak. Public Enemy got shit on. Ric Flair (early 90's) was instantly a top guy. Mick Foley became a top guy.
It's the wrestling business. The only issue everybody seems to have with TNA is that a lot of well known names have come in all within a year. But I'm perfectly fine with it. Whatever helps TNA get more "up there". I agree that it sucks to see Kevin Nash out there still trying to have a match and act like he's a top dog. But he's no Undertaker. He is better to watch than Khali... but not by a whole lot. Sting still has stuff left in him. The ECW thing.... eh, it is what it is. I think it's ok as a faction. But you can't say TNA's "originals" aren't getting their shot. Come on, really.... Shark Boy isn't gonna be ascending to the top and taking TNA with him. Samoa Joe, I think he's a great wrestler. But his time has come and gone. Maybe he should get a new shot with WWE, pick up from Umaga's top mid card spot. Or go back to ROH and help it pick up more steam with Daniels.
The X Division and Knockout division DOES need some TLC, as well as the mid card (and its title)... but everything else is great.
I don't see TNA as a "WWE Reject" place. I see TNA as the place where all wrestlers, past, present, and future, come to get a better shot or make a name for themselves, and not be limited by WWE. Some guys can make their name in TNA... like AJ or Joe.... and potentially make it to WWE and be a top name. And hey, good for them if it happens.