Found wave 3 today at Target -- here's a quickie review:
First off - Iron Man. I'm just go ahead and call this one perfect. It's the iconic armor and the size & sculpt are just plain fantastic. THIS is my default Iron Man for all eternity. Much like Robert Downey, Jr, this wipes away years of Tony being a total douchebag. I LIKE Iron Man again because of this figure. Who'd a thunk it?
-- Now if they can make a "Silver Centurion" suit with as much attention to detail.
(for size comparison - Punny is made out of a 25A Roadblock fig.)

Ms Marvel was one I'd been waiting for -- a solid female sculpt for customs, and an interesting character in her own right. The sculpt is great, with only two real complaints -- the waist is a little loose, so she flops around a bit, and most of all - she doesn't have swivel elbows/biceps

-- Probably because her arms are so skinny, but they really could have made this a perfect figure if they gave her some "Swivel-Arm Battle Grip".

--Expect to see a new Wonder Woman custom from me in a couple of days
I was on the fence about the Thing - only because I already have one with that look (an MLS Custom). I'll be honest - the MLS figs have a better sculpt and more articulation. The MU fig looks a lot more cartoon-ish, too. For me, though - MLS figs keep popping off at the joints, and I'm tired of fixing them. Also, the MU figures are VASTLY more sturdy than the MLS figs - this guy is solid and will hold up to hard play. So add that to the fact that his pants match the MU FF guys better than my custom paint job, and he wins for me - but just barely. I'll likely customize this guy and use MU legs on the MLS body. If you're happy with your MLS Thing as-is, I'd pass on the MU version.

Finally is a figure I've been waiting for for more than 20 years - black-suit Spidey. I had the Secret Wars fig in the 80s, I tried (and failed) to like the MLS version but it kept breaking. I made a Microman custom version but I suck at detail painting. This version is as close to perfect as you're going to get, IMO. The only thing I can find to critique is that he's a tad too tall - but he's going to be crouching all the time anyway, so that doesn't matter to me.

Passed on the Punisher because I've got a better one

Passed on the Hand Ninja because I've got no use for it and I don't like the Ronin mold. Went to another Target and snagged an extra Ms Marvel and Iron man for customs before I even opened up the first ones - because they were that impressive in the package. Even more so in-hand.
So happy hunting everyone! Oh, and I also found the new SW battle packs (Yavin Hangar, Toon Jabba, etc) at Target, too - passed because I ran out of $$$. But they're out there.
Cheers!