Guilds in WOW work the same way though. You can get anyone to sign your charter once you get it.... Same as with other games. I mean you could make it where each person who wants to be in the guild needs to pay gold to join, buts brings up a ton of problems, or you can make "guilds" a premium content feature meaning you have to pay to start or be in a guild. Other than that, there is no true way of making it "uneasy" to be in a guild.