For me (bottom-Diamond who generally only plays to boost friends), the feature I'm looking for here is to be to critique or annotate games - my killer interface would be a cross between GNU screen and an American football play highlighter thing (I'm afraid I don't know the technical term). Pretty much anything that's not social I can get better from the official client, so my feedback to you would be to focus on the things that I can share with my friends.
Hmmm i like where ur going here. What if i added annotations where u could tag points in time. U could share these notes w friends and teammates. It be cool if i had a img of the full map that u could also place these tags on and draw on it. That kinda ur vision? I think that b sweet
Are you aware of the SC2 interface/render hooking system[1]
by Matthew Fisher? I've not actually had time to play with it, but I believe it uses a software-emulated display buffer, and then parses the raw directx drawing primitive stream to determine what is happening.
I'm not sure if it supports replays, or how much effort that would be to add, but if it can, you could extract huge amounts of metadata like build timings/orderings and whatnot.
[Edit: and of course, if you can render to a virtual screen, maybe there could be some way to run headless or multi-instance on a single box]
If you can get the suitable video player controls, it'd be fun to integrate it with an interactive timeline something like SMILE[2] to show significant events throughout the game (first discovery, first unit death, 'interesting' (say, involving more than X units or Y diversity of units)
