Yeah, I'm 90% sure the elbows are ball/socket joints, they're just odd looking because of the photo in the rag I believe.
As far as the collar and vest, RFT vests are like Han's in that they don't really hide the collar anyway (they were called European Cut Vests or something like that?). So I still say a sculpted-on vest is a step backwards on the figure and a negative, if it turns out that way. It's almost impossible to tell by the photo. So far, it's the only major negative I can see and everything else is looking good, if it is... I doubt it stops me from buying this figure in any quantity though, if everything else holds up.
I can't wait to make a pile into ground combat guys and things. Good times ahead methinks.
Like JACK said, these are hand-painted prototypes, not production figures, and I expect all of them to change. These figures sometimes have joints that have gaps and such. I expect some things to look better and some to look worse on production images.
And clump myself into the, "I hate beards" category on troopers, at this stage. Almost everyone has a stache, goatee, or beard, and Hasbro needs to stop with that stuff for a while.
Bom Vimdin is sweet... Love that freak. He's my last real wish for Cantina aliens. At this point Garrouf Lafoe is my #1 Cantina want.
If the Fleet Trooper is a home run, then my #1 overall want is a tough choice at this point. I've spent 20+ years wishing Hasbro would do a decent Fleet Trooper... I'm expecting this one to be just that. You never know when you're getting dealt a "30AC Death Star Trooper" type situation though. It's kinda cool, but has lots of glaring flaws as well.
Oh, and the Pens just scored. Go Pens.

Oh, and scored again. Go Pens again.