I can make a slightly modded map, including some requests in it, but I do want to have some creative liberties as making this map will take plenty of time, and tends to get boring if it is just an "order".
My idea to make things a bit more appealing:
Reduce costs of: Fighters, stealth-fighters and jet Fighters, Paratroopers.
Increase costs of: Submarines, Bombers, Marines
Massively increase costs of Nukes. (It is just not right that 4 Tanks equal a Tactical Nuke in costs...)
Make buildings in the Modern Era more worthwhile to build.
Add small wonders that Produce Units.
Map: A Varied map with enough Sea to have naval opperations in.