_I love this idea , it is very accurate historic wise and also adds a lot of new tactics and limitations to the game , I endorse the upgrading idea mentioned by the guy who posted before me and would like to hear his stats and such 8-)but I battle tested this rule yesterday and it worked great, I will be using this rule from now on for sure _
It only takes a few days to build airfield so why pay extra cost for that?
There was already airbase everywhere in the pacific (Except Guadacanal and New Guinea island)
so it’s useless.