I think such a database would be a great idea. It would help people decide which plugins they might want to obtain, especially if there is a cost involved.

I think such a database should include slots for:
a) whether the plugin works as a live effect on vector objects in Xtreme;
b) whether a vector object to which the plugin is applied is "locked" or remains editable;
c) whether the plugin is commercial or freeware;
d) where/how the plugin can be obtained.

Glen