From: Rijeka, CRO
There is no way to make a list with Player Defined Upgrades as it is dynamic.
As new aircraft become available, they are part of the list and as the older planes cease to exist they drop off the list.
All you can do is deal with what can be done *now* in the game. As people do their own conversions within the game, they will effectively create their own customized list of choices through their actions.
Yeah, but there is "hard coded" upgrade path defined in the editor, which, to my expirience, aircraft factories follow to retool themselves. I.e. factory producing G4M1 Betty automatically retool to G4M2 once it become available, regardless what player chooses to upgrade his G4M1 Daitais.
Sure, you could just look into editor and type those in a nice little xls sheet, but frankly, we're being spoiled by Spooky's + having big lazy asses, we probably expect for someone else to do it and send to Spooky.
But when the blast of war blows in our ears,
Then imitate the action of the tiger;
Stiffen the sinews, summon up the blood,
Disguise fair nature with hard-favour'd rage.