Kyle looks fine, the saber looks great, the Stormtroopers are something else, and judging by that E3 video footage, the game is going to be awesome when it's released.
I agree that some of the environments do look a little sparse, and there are too many grey textures, IMHO. I wouldn't mind seeing a few more black and white textures, like in the original Dark Forces. And some more colourful environments, like DF's Gromas Mines level, and coloured lights, like in MotS. I think these things could spice up the environments a little bit.
Of course, it is very early days yet, and they could be planning all of this for the final game.