I was always for fun, but you have to understand that competition is the dynamic that likes most people. If you pay attention, the main global Osu tops and do not find interest in the game, because the ranking system and they tired a bit.
I'm not a global top, but with six billion points I'm a bit disinterested in the game, and that does not happen to me, if not to many people.
Osu can be fun viewed from a competitive standpoint, and at the same time, maintain the interest of the old players for a long time.
The clans, teams or squads, or whatever you call them, are something that would achieve a dynamic much more fun than the current one in Osu, is something to consider.
"I guess clans could work pretty well in osu! now", The perfect phrase to sum up everything I said.