Very well put, Envinyatar. Many thanks!
As far as adults go... Well, in this context, I'd say that being "adult" is certainly more a behavior thing than an age thing. Come to think of it, that applies in any context. But yes, the idea is to have someone "in charge" so we don't meander all over the map of Middle-earth for the next 8 months.
Think of it as much as a game "facilitator" as an "owner." But it's like a chain of command, or military rank: The authority is there, to back up in case suggestions and hints don't work. The hope is that no one'll need to "pull rank," but if there's a need, the authority's there.
Not that being "in charge" means one necessarily has all the answers. Back up plan? Um, Envinyatar?
Keep in mind, though, we're not starting until September 8. That's what, a week and a half to go? This thread has been open scarcely that long, and see how many people have signed on!
Don't give up the ship.

Carry on!
Nuranar