Thanks for the comments. Responses to various things:
Verision:
1: haha, I actually at one point considered basing a catfolk's range directly on its Athletics. I'll go back and look at the distances involved but you may be right in that Lunging Pounce should be a paragon feat if it exists at all. (I'm not so much concerned about consistency as balance, but I think balance may be on your side as well, now that I consider some of the later changes after conceiving that feat.)
2. Correct.
3. Hmm, I suppose you're right. I was just assuming that gauntlets were gauntlets and that was that (and I wasn't actually thinking at all of buying them, just finding them). That should be an easy clarification, though.
generalhenry:
Goblins have +1 Ref and +2 Dex.

I figured a feline race should have particularly good reflexes (which is also the idea behind most of their other abilities, of course, e.g. almost never prone, reduced falling damage, etc.)
As for the unarmed feats, you may be right about Wrestler, although I haven't seen grab used enough to really be sure. Basically I'm looking to make grabbing useful without making it the absurdly complicated mess it was in 3.5; grabbing in 4.0 is only very situationally useful since it doesn't stop or impair enemy attacks or aid friendly attacks, just stops an enemy from moving (which I understand was the intent, to deemphasize grapple, but I'd like to make it a useful option for someone willing to spend the feats).
Unless you're talking about the benefit to unarmed combat, which goes along with my response to your concerns for Unarmed Opportunist, which are: even with these feats and enchanted gauntlets unarmed combat still seems to me a suboptimal weapon choice--a feat to get the equivalent of a short sword without any extra features from fighter powers, etc. I understand that the prone thing is stepping on the toes of fighters, but tripping (which is essentially what this is) is, I think, one of the signature parts of D&D unarmed combat (along with grabbing)--or, more generally, outmanuevering your opponent rather than dealing more damage.