I would like some sort of creative/sandbox mode added to the game.
Viewing post in Put Your Suggestions For The Game Here!
All the expected stuff
Infinite resources
Infinite administration
An ability to control AI relationships (also with others)
Instant upgrading and building time
No workers required for building and free building (no resources cost)
Ability to convert hexes/tiles as your will (optional)
Infinite health to units (but they will have disband button which will destroy the unit)
That's my guess