It would be really nice to be able to pause and frame-step on DVD menus with video backgrounds. It's possible to pause a DVD menu in VLC but unfortunately VLC doesn't support single-frame stepping. And anyway, I like MPC better than VLC, so I'd really like it if MPC would support this feature.
In case anyone's curious, the I'll explain the reason I want this feature. I'm an animator and I have several motion reference DVDs in which all the video is implemented in menus rather than regular videos (in order to make the navigation very intuitive). The problem is that in order to be totally useful to me, I need to be able to go through these videos a frame at a time.