Yeah, the DS looks like an erector set in ROTS, and even in zero G, that seems a flimsy way to build a station the size of a small moon. Wouldn't it make more sense to start building the "core" and work your way outward? The "unfinished" DSII looks more realistic.

I also don't buy that it took twenty years to build the damn thing. :P

Prowse hasn't been in George's good graces since the filming of Jedi, so it was unlikely was he going to get to play Vader one last time.

Not having Vader in "prototype" armor modeled after McQuarrie's early concept art was a missed opportunity. Not to mention the suit looks too modern compared to the 1977 costume.

I'm surprised Tarkin isn't in the Clone Wars series. Instead, we have one of the guys who sat around the Death Star conference table and didn't have any lines.

Tarkin wearing the same uniform for twenty years might explain the stench though! ;)