I'd really love the ability to select the Phase in which the game commences. This would allow for a wider variety of singleplayer and multiplayer playing styles. It's a common feature of many games with technology or research phases.
For me, I'd like to jump right into military composition, battle tatics, etc. without all the "boilerplate" of unlocking my civ's champion units and siege units.
I'm wondering if there's a console command or config file I could tweak or some other hacky workaround. Also, as a programmer, I'd be okay with contributing this feature to the Matches UI.