1440 minutes in a day. Give out 1 key every 20 minutes. That's 72 keys a day. 360 keys every week.
1440 keys a month. It would give a slow, constant progression towards maxing out a beta cap. And since open beta starts next month with operation inception. You would still have enough control to invite more players before then.
1486582 member registered. Minus the ~2500 invited already 1484082 total members.
Daily each member with have a .00485148395% chance of getting in daily.
Edit: woops. This probably needs to be moved.
Edited by Blackfire1, 11 June 2012 - 06:41 PM.