Hi, I agree with Michal on this one. IMO, ad-hoc limits like these have no place in a protocol standard (especially not in a flexible one like XMPP), because there is nothing 'logic' about them. You are limiting the use of your protocol for no real reason (except that today, most clients don't need/want more). 1024 might seem a good number now, but you'll have to change the number in the RFC over time.
Limits like these should be set on the server side, and the server should refuse to create groups larger than 1024 or something like that. cheers, Remko
