Just thinking out loud for now, sometimes something comes of it:
One dare/task for everyone seems impossible to realise. Celebratory orgasms would be fun, for those of us who are not denied.
A new function for the site seems excessive. Special roles referring to the exodus maybe superfluous since the join dates are right there.
A 1000 signed up users celebratory sub-forum maybe? People send in proper dares/tasks, best case would be 1000 (though extermely unrealistic) and similar to the bank ones, we'd all have to work towards completing them. Once the thousandth dare/task has been added and completed, that sub-forum closes for new entries and stands as a permanent archive? No person above stuff, no messenger stuff, but proper brain juice put into the dare/task and also the reports of those daring to complete/attempt them.
This might encourage reports under the usual dares/tasks in a similar vein. But it might also just take away from that in the first place.
Maybe something in the voice chat even?
Yeah.. nothing concrete is coming to this puppy's mind. But maybe some of these words have stirred some synapses in somebody else's brain.