Pyros
<Silver Donator>
I just said that though? Or do you mean that you'd want to play in a group but self found? I guess they could do what RoS is doing, with items becoming soulbound but tradeable with your group for an hour(tbh should be like a couple of days and should work with anyone on your friend list for a while at the time of the drop). Granted that's more work. They could also have permanent allocation on all the time, with trading disabled, and maybe work something out for item dropping(like they're still allocated to you when you drop them). This way you can group, but you can't trade or can't loot stuff from other people.the problem with a self found league is that in PoE self found has to be solo.
There's a few choices tbh, especially if they use the friend list or guild to restrict the trading possibilities, to make it group friendly but still "self found".