Either the community director or the TalkBoard of this year or next. Probably the CD since she has a more complete picture. However the TalkBoard isn't approving expansion until after hearing from the CD and voting on a new proposal.
As to goalie's request for a time limit on the test I don't object to that if the other TalkBoard members prefer it that way.
goalie would you prefer a two phase test or a single trial by fire? I don't mind that two phases will take longer but i suppose there is entertainment value in a quick and spectacular failure.

So, you don't have an idea of what qualifies as a success or a failure, nor do you have a metric that will define either? Speaking for the entire TalkBoard about approving or vetoing expansion is a little far-reaching, isn't it?
As to goalie's other request to set out a rollout plan, that's premature. With images we had plenty of concerns and no such plan. It was step by step as I recall. In that case results were surprisingly trouble-free. I hope for that outcome but nobody knows yet. The current TalkBoard should not pretend it can tie the hands of future TalkBoards or the Community Director who will have better information after any trial.
So in summary ideally it will work like images did. Time will tell.
Again, so you don't have a plan for any of this?