Nah, I can't see them all being dynamic...hell, maybe none of them will be!
I mean, it's more the bases with XM, isn't it? I mean, Han just standing there, blaster at his side...is that worth $1100 or whatever Canadian it'll end up costing in the end? Nah. It'd have to be something that'd blow me away. And that can be simple too! It just has to be simple, and cool.
I'm not sure if that makes sense!
Like, my Deadpool PF is one of my favourites! It's simple, but I love it. My Obi-Wan Mythos...that's something I'd expect from most of their pieces. It's not dynamic in the Spider-Man PF pose type of way, but it tells a story. Maybe that's a better way to put it, and XM has made a lot of bases that tell a story. That's important, I think. Or it at least helps make them so sought after/appealing.
For example, for Vader, I think him in his meditation chamber would be really awesome, and right down XMs line of strengths!