[Rexxx]

Originally posted by oleg:
Don't think it will work in "open" state. There are always planets to colonize and AI can easily saturate "planet per item" and get to the same sorry state but I'm not sure.

That's exactly what I guessed. Sooner or later the Planets per item condition is fulfilled with unusable colonizers and I get stuck again in this damned dead end.
Will run my tests in connected games during the weekend, maybe I can come up with something.