I had discovered Elgg when it was still in its infancy, and I have been meaning to check on it but didn’t (followed up AroundMe’s progress instead). It would seem they made a huge leap : localization, plugins, an apparently dynamic community ! My, my, I have some testing to do
Thanks for reminding me of Elgg !
Very interresting... now, about integrating I guess the main thing as usual is syncrhonizing user accounts. It would seem Elgg has its own ACL, the challenge here would be to have a single login for MODx and Elgg... on the other hand some might say given the permission and user management system will be totally rewritten and it could wait a bit, others might say "how hard would that be to write this kind of application with MODx"....
But I’ll let devs react to your idea (which is great, Elgg is nice !).