Thanks a lot for your feedback. Yes in GCompris we take care to avoid time limited activities which implies tuning them on the 'average' children and excluding disabled children.
Doing a slidesow is a good idea. In the Gtk+ version we have an animation tool that we have not yet ported. But I like the idea to have in GCompris an office suite for children. We have everything needed on our wiki to start developping a new activity and our IRC channel is very active, don't hesitate to join.