If a few come back then too bad, if they intended on keeping the guild they shouldn't have left. Whats the point of owning a guild you will not use?

I also believe people under a certain amount of hours should not be able to create guilds. Keeps 4 people noob guilds with a name like "Tw3rk 1t l1k3 M1l3y" and everyone offtag from existing.