Seems like this could lead to confusing bunfights when the clock strikes, as several players fight over the powers they want at exactly the same instant, probably losing them in the few seconds it takes to switch windows and take a GNDT action.

Isn’t that just as possible now, when they all become active at the same time?

It’s currently unlikely because we don’t know when they’re going to become active. If you tell us that the best power of the game is coming online at 3:47pm, though, there’ll probably be a couple of players camping the spawn, and trying to bid for and use it simultaneously.

Fair point. What about keeping “powers are immediately active” but spacing out the actual posts over the first day of the epoch?

I like spacing them better then post locking them. 

Self-kill.