Ozzel - Glad to finally get him, but like others have already mentioned above, he seems a little
off... I think it's the coloring of his uniform, his face/mustache, and him just being a little too skinny. Still a decent figure, but I hope the final retail version is tightened up just a little bit. Great custom fodder though (not that I can customize very well). Finally an IO in a standard TUNIC (flat) uniform!
Dengar - Looks great, and it's cool that he can be posed in a firing position. But my first thought when I saw him was similar to what Jesse already pointed out - that being the potential lack of articulation in the arms. The only reason I feel it's really warranted here is because the scene we all want to pose him in is the Star Destroyer bridge scene, where he's certainly not blasting away at anyone. He's just standing at attention with his arms straight down. Hopefully that's still possible with this figure, but it doesn't look like it. Hopefully I'm wrong though. Otherwise, great figure.
Bossk - Yep, not really necessary, but still a nice improvement on the prior one. Even more reptilian looking now, with what appears to be some nice articulation in the arms. Looks great, but I'd have preferred a new Zuckuss and/or 4-LOM first, though they are appearing on some new rumor lists now...

Not the most exciting wave overall, but I think it'll get better before it's released.