@Thomas Richter
If you are going to mantain it, I hope we (users) get some improvements.
My humble suggestions:
1-The most painfull and user unfriendly program on Amigas is probably Picasso96Mode. Could you please actually redo it, so that it makes sense?
CGX for example, has a very easier counterpart (CGXMode). If you search the web a bit, you will find lots of complaints about this on P96.
2-Add documentation on how to manage multiple gfx cards on P96
3-Implement multi-monitor/multi-display support (extended mode - clone mode)
4-Build a Picasso96 AGA driver which would be very useful (much like a CGXAGA driver counterpart). Even better if you could develop an OCS/ECS one, with of course, a limited feature set.