These look great!
Speedball looks like he should -- 'Thrasher is spot-on and I'll be stealing elements of your recipe, BTW.
Nova's great except that head is just too small. I toyed around with using the Magneto head for mine (since it's the perfect shape), but it's just too pea-headed for me (and I'm using a Microman for mine, so a smaller head wouldn't be too bad). Mine's been in the 75% complete stage for a while until I can find or sculpt a suitable helmet. I'm basing mine of his newer look, but I was building him from memory and realized that I screwed up some stuff on the chest (using Green Stuff), so I'll have to modify it further

But yeah, the team is looking great so far! All I've got for my NWs are Nova & Darkhawk (since everyone else got killed in Civil War - not that I follow that "canon", but the guys who got killed annoyed me anyway.) But I'm still gonna make that Dwayne Taylor custom (he's still alive anyway, isn't he?)
Great stuff!