I have a few gripes but none are really that major. Starting the channel where you are (Comcast digital does this to me too, so i'm sorta used to it but I still hate it) would be nice. I really wish they separated the channels better, with maybe having only HBO, etc between 200-300, only certain channels between 300-400, etc, I never understood why nobody does this? There's never any sensible grouping. I also wish there was coloring for the different types of channels like Comcast does while surfing through the guide, Comcast uses red for movies, green for sports, and blue for normal shows (if I remember correctly).
There are some others I can't remember right now, I know a lot of these have been addressed in the wishlist...