Had he wanted to wrestle and make himself look dominant, trust me... he would have been there already doing so.
Regardless of what you think of the guy a match against Hogan for any of these younger guys is going to do A LOT for them. Sorry, but a victory over Hogan in terms of kayfabe still means worlds more than Angle putting someone over.
Hogan hasn't been in TNA sooner not because he doesn't want to, but because TNA wasn't hitting the price I am sure. Hogan wants a Mania like paycheck for every appearance
We're talking about TNA fans here. Of course a victory over Hogan would mean more, but the match itself would piss off the fans. Hogan standing in the ring while AJ does a bunch of flips around him would completely suck.
BTW, if the Impact zone doesn't boo Hogan's ass they are a bunch of hipocrites. Weren't they chanting "We don't need Hogan" and "Screw Hogan" just last PPV?