You make some interesting points. I've been stockpiling account creation tokens, but there doesn't yet appear to be a market for them. I assume as more people come to share your conclusion there'll be more people looking to delegate, and fewer looking to stay powered up, driving up the price.
Of course you could power back up instantly at any point, so it's not like you're risking missing out.
Maybe a 13 week powerup period would even things out :)