If nothing else, one thing I'd like to see soon is a way of customising what items are shown in the OSD by media type. It's too cluttered with stuff I never use. For example, while watching live TV, all I need/want to see when I activate the OSD is the "Programs" item. I don't need all the other stuff (like signal strength!). While watching DVD's, all I want is the stream selector and aspect ratio options. It just causes way too much confusion when you accidently arrow up/down one too many times and have to find where you were amoung so many menu items.
There really needs to be a TiVo/WMC-like position marker as Ben says also (that stays on-screen and gets updated during video seeks too!). Why doesn't the OSD stay visible during video ff/rew (CTRL_left/right not jump) like it does for DVDs?
Cheers.