I think that there should be a separate chat for people who don't have clans. This chat will be called the void and will only be accessible by people who don't have clans. There will be different servers just like global, and players will be able to request troops to other clanless players. This will be a good social option for people who want to stay clanless and also don't want an endless stream of invites from clans. Or you could create an option in settings that blocks all invites, along with the void. This is an awesome idea.
This game is called Clash of CLANS. Clans are supposed to be a big part of the game. Anyway if you stay out of clans and form a group with others, that is technically a clan :P
Please check out my highly supported, popular new idea for Clash of Clans, Water Defense! BOOM!
Preferred trophy ranges for regular farming and DE farming:BOOM!
Check out this thread for the dumbest things people did when they started Clash of Clans: BOOM!