I thought maybe with a few bits swaps...nah. Too Orky for marines. This is the big kit for the new release we're talking about. On par with the Riptide and Wraith Knight. It's got to be awesome and dynamic, and way better than any conversion I could do.
Then I saw these:
Yeaaaah. Maybe they just don't photograph well. Maybe the ranged combat ones look better. Maybe GW realized marines sell no matter what.
Edited to add...
I don't necessarily think this is a problem with the sculptors or design team themselves. More likely decrease dev time, physical production constraints, and top down directives(Must have big $$$ kits!) are making it hard to produce top of the line models. So instead of "hey, I have this cool idea for a kit," it's "Make me a kit that cost $75 retail, fits in a standard size box, and you have 2 months." That's my internal rationalization at least.