I am not an overtly strict GM...
However.
My limits have always been to have strong and reliable players, play main characters. Right now there are perhaps 3 players on Elliquiy, I'd let play Harry, Voldemort, or Dumbledore (I usually play Dumbledore as the Gm, but for the right player would pass the torch)
So what I have come up with.
A group of 16 years olds (minimum) (as per elliquiy rules) (meaning year 5 or better)
Can be during the time of Harry at Hogwarts
I will go with you and test the sandbox idea.
But i have already requested a few friends, those I trust to play Harry,Ron, and Hermione. :)
so any other canon or original character is open.
I will request a new Hogwarts Board (#3 for me)
Titled Hogwarts: Visions
Normal free form :)