So I really like the idea of giving the Khan a unique improvement and it's been occupying my thoughts for a while. Now, I generally don't find individual tier lists to be that useful, but I do see a common trend that people seem to rate Mongolia very highly, which I agree with. As such, I wouldn't want to significantly buff their general play. Simply gaining an efficient tile improvement definitely fits that criteria, regardless of what yields it provides. I also wouldn't want it to occupy the same space as Merchant tiles, or reduce the tile acquisition, as they're both unique and interesting in their own right. Rather, I would like to lean into the land grabbing nature of Citadels and the aggressively expansionist nature of Mongolia (both thematically and gameplay wise) while leaving it as a niche benefit that shouldn't automatically increase their general effectiveness.
To that end:
Double the tile acquisition radius of Citadels, now named Ortoo
When occupied by a military unit, Ortoo provide their yields to the closest owned city without being worked by a citizen.
The idea is to encourage players to aggressively steal land from their neighbours. Currently, the only way to encroach significantly into other player's territory is to either wait until Autocracy's Lebensraum policy, or tear down Citadels so you can place a new one adjacent to the old one. Tearing down Citadels feels particularly distasteful as you're removing what is supposed to be the source of your power projection which allows you to control more land... so you can control more land.
Increasing the acquisition range allows you to keep the Ortoo intact, which loosely fits the historical idea of it being a way station and continuous chain of power projection. Providing yields outside of traditionally workable tile range gives a bonus, and thus incentive to land grab even without resources in range, while also not directly competing with any existing tile improvements. The requirement to occupy the tile with a unit ensures an opportunity cost while fitting with the thematic idea of maintaining a military presence in frontier outposts. Finally, because the yields are only "free" when out of citizen range, the player should not feel compelled to land grab areas where settling a city is desirable/possible.
Thoughts?
