That might work for the late game, especially if there were buildings to help fight against it. But I still think plagues could cause easily cause massive problems in the early game. I already said this in my previous comment, but to reiterate, I think there are a few major issues with the concept of disease outbreaks in a regular game of civ that need to be sorted out from a gameplay perspective:
- First, there is no way to predict them.
- Second, there is no immediate positive side to disease outbreaks.
- Third, the factors that make disease more likely are already game elements that can be considered weak.
Disease were absolutely important in the development of human history, but gameplay comes first. If these three issues can be resolved in a way that isn't incredibly convoluted, I'd be open to the possibility.
Even if it wasn't a complete subsystem and just another form of disaster/potential emergency, there would need to be a clear trigger case, like how droughts appear where there are no forms of vegetation.
Then there needs to be some kind of silver lining that isn't barred by era or technology. Something that will make living through it less of a complete downside. Later down the line, there can be ways to further mitigate or even gain advantage out of it; I don't think there is any shortage of ideas for the latter half of this issue. But the early game part needs some kind of boon to offset how much it could hurt.
Addressing the first issue I listed would help the "bad tile" and Tall problems to an extent. Marshes and estuaries are an important part of ecology, so it bums me out a bit by how frequently it is a good idea to harvest them. Similarly, rainforests are often home to incredible biodiversity. So the negative appeal for those who aren't Pedro is a bit disappointing sometimes. Rainforests aren't
quite as bad anymore since they can be Lumber Milled now.
I think that they're often a sizable investment since you have to build an Entertainment complex and two tiers of building, but I do like that Zoos provide bonuses for keeping them around (although I didn't get to take much advantage of this my last Maori game).
So if there were more infrastructure pieces or policies that can maybe persuade you to keep Rainforests and Marshes around instead of harvesting them and not risking diseases or "wasted" tiles, I would like that.
I am definitely hoping that they'll buff Citizen slots in an update. It would be nice to have more reasons to run them regardless of whether or not disease mechanics existed.