I think I have trouble to follow you...
When the central factory stays down for a much longer time, (so that it's not popping up before you even get your B-29 home)... what "other base" are players moving to?
Ah, ok. I misunderstood, I thought you were talking about tactical rebuild, like at airbases taking longer. You're talking about the downtime of the strats themselves.
So you're proposing to give players the ability to take out the other country's radar for what, around an hour? Is that counting if they resupply?
Wiley.