Screenshot 12-2 has a unit that I'm not familiar with. Maybe I missed an article or something, but what is that?
Screenshot 10-2 is a good shot in seeing the creep, and yes, I agree, it doesn't look very impressive. Even back at BlizzCon it looked pretty bad. I had even asked Dustin about that when I caught him after the tournament awards presentation, and he said he wasn't very happy with it, but they were more focused on getting the races structured for the build than some of the cosmetic details.
Screenshot 06-2 is an older shot, and can't be relied on to confirm the current presence of Protoss team colored psi.
Screenshot 02-2 looks cool, with the Colossi seemingly coming out from the unseen watery areas. Whether this means that they can walk on water, I'm not sure, since water is a barrier no different than the magma on the lavaworld and empty space of the space platform.