So, for the features:
- video playing while exposing: we plan to hook the default video renderer filter in directshow. But for now it's not the most important thing
- windows continues to animate while exposing: I am searching hard a way to obtain this, I already tried to make a mirror display driver, but I would only allow me to obtain a copy of the screen buffer, not for each windows. I now plan on GDI hooking, but I dunno if it will ever work. That would be the greatest thing because the time when you press the expose button and the expose starting would be VERY VERY little
- Yes, it is possible to have only the expose effect

actually expire is driven with his animation plugin (a SDK will be released, I am working hard on it). To be quick, the windows goes where you want and when you want them to go. So of course there will be a "standard" expose animation plugin
- As in regard of organisation, DrD.i.c.k has found a quite interesting way to organize them (prolly very close to the real expose). We studied the Exposé algo alot and simply exposing the windows is not only the most important thing, the way they are organized determines A LOT if the program will be efficient or not
- About the shadows: there will be no shadow staying problem
- About drag and drop: maybe
- About a release: I dunno really, but I hope really soon

, check out the expire website when it's ready:
http://expire.free.fr
Hope this clear things a little bit
siwu