Because I've seen and taken just about all there is to see at the moment... 99e will be a whole different game visually with the addition of many, many skins and items. Hopefully with some better-looking maps too - each time I have to look at vesperas and compare it to something like fistful of steel, I want to punch my monitor and take a few eye drops to soothe the pain.
After reading what's going into 99e, 99d seems worn out and dull to me. I'm just waiting for gen to evolve into something interesting again.
The screenshots aren't so much about the eye candy, it's so you can cruise through and go "OMG I remember that!"