mitsho
Deity
I'd be okay with skyscrapers as a building separate from medical labs, if we think tall empires need that much food in the late game. In general, though, I like to combine the effects of similar buildings so everything has a distinct and unique purpose.
I'm not sure we need a second building, especially with the effects in the Freedom tree. I just thought a per : might work differently than a + % growth building. So it's probably better to have it replace the medical plant and leave the choice between iron for production or iron for food building.
Following that train of thought, what fundamental role could airports provide? I wish we could make them just like Civ 4:
Sadly none of that is feasible with our current modding tools, so we need to come up with alternatives. Moving aircraft experience bonuses to the airport is one obvious choice. I don't know what we could do for an economic bonus (enhancing trade routes is not possible at a local scale). Maybe gold per population?
- Airlift units
- Connect trade routes
- Double aircraft stack sizes
Make it use up oil and give it +10% commerce nationwide?
Or make it a city-state related building which fits with their late game appearance. They could give 0.5 resting points with all city states per which does prefer tall empires....
I think the racetrack or ranch is a good way to consume horses in the late game.
But don't racetracks fail your test of real world importance (see hydro plants?). I'd rather have constabularies require them (fast police needs horses and even today, horses are used in cities for crowd control). Of course they'd need another effect then. Or again, Postal stations, but they have the problem of fading away in importance once railroads get common.
I do like the idea of giving tall Civs more of a chance in the religion wars, but going from a flat 2 to 1 + 0.5 per would really mess up game balance, I would think, no?
What about slightly rising faith prices and creating a new building that requires the temple and gives +0.33 per :C5citizen:? (Assuming the temple doesn't require the shrine)?
Alternatively, an "or" choice between Faith buildings could be interesting (as with Hydro Plants and Nuclear Plants in vanilla). One could give a flat amount of Faith, and the other + per . This choice might be better suited for the Belief-requiring buildings though, I suppose.
Heck, I think introducing more "or" choices in buildings would be fun in general. More tough decisions!
That might work as well..