I have a suggestion for CSR that might ease this issue in the future:
In other (unrelated) competitions elsewhere I’ve seen it done where the rounds are staggered alongside each other, rather than one after another.
For example, the winner of CSR 112 would host 114, and in the meantime, CSR 113 would be underway to determine the host of 115. Basically, every winner hosts not the next round, but the one after. Not only would that allow a winner more time to come up with a theme, but once submissions close, there would always be another round open to start working on.
I think that could relieve some of the pressure from running this stuff, as it can be pretty time intensive, and I imagine many of us have other commitments without a ton of free time.