How so? The screen is bigger, but it's standard lcd so expect the same washed out dull colors of yesteryear. Wimax is nice but from what I've read with Tmo's HSDPA+ rollout it's already faster, though Wimax will eventually become faster but not at this time.
SenseUI, I'll pass, I'd rather have stock android. Front facing camera, I don't think I'd ever use this, I've had a webcam on my computers for about 10 years now and I've never once turned it on. Hdmi output I don't think I'd ever use either.
The one thing I like is 720p video recording, the 8mp cam I don't care about because I always have a dedicated shooter on me. Colored trackball notification are also a must have for me like on the N1, can't really tell if the Evo has any colored led notification though I'm sure it does, probably a small one in the corner.