What's here is really the first stage of Leagues, but let's get the foundations in place before we get too far ahead of our selves

Naturally, we tested the hell of things, but bugs are going to show up as more people use it. Let me know.
A few things off the top of my head that deserve mention up front:
Joining Leagues
Leaders of leagues invite players (from that player's profile page). They get an in-game message with a link and, anytime thereafter, can join the league.
If you're familiar with KoL or Metroplexity, invitations work as "white lists" including holding on to your status.
Accesses
At the moment, there are only two special accesses: Recruiter and Leader. Leaders are the admins for the league and can do whatever they want. Recruiters can invite new people and manage invitations.
Multi-Abuse
Honestly, the easiest and most fun way to make sure you're not engaging in multi-abuse with Leagues is to be in Leagues with other people rather than with a bunch of your multis. Past that it gets really weird.
I understand some people will want their characters are part of the same League just to chat. That's obviously fine, but as soon as you have multiple characters contributing to the League's or drawing from the League's resources, that's going to look like multi-abuse.
Cheers!
Kinak