Exactly. There are only a few buildings that use this mechanic, and I think it should be used sparingly and saved for the most important infrastructure buildings. Not that we are making too big a deal of infrastructure; I can accept Power Plants and Computer Networks, but we don't really need to include things like Paved Roads or traffic lights. (We used to have Paved Roads; I pretty much replaced it with the Caravanserai.) What might otherwise be considered infrastructure
For me, Power Plants work, Foundry does not. Estate gives you a free Noble, so I think in addition to its other bonuses the negative effect is offset enough. Workhouse is clever, but probably needs to be ramped up to be worth it. It's only +15% production.
City Gatehouse is an oddball. It's just a defensive building that employs a citizen. We already have the Palisade-Walls-High Walls line and the Castle-Star Fort-Bunker line. Another defensive building on top of that seems unnecessary. Castle Gatehouse has a use because it uses the "no entry" mechanic. City Gatehouse could be easily combined with either Castle Gatehouse or Watchtower.
The one place where I WANT to use this mechanic but haven't is the resource-producers like Brewery. These Wonders benefit your entire civilization without a real opportunity cost to the city that builds them. They are National Wonders only to put a cap on the total amount of the resource floating around (otherwise 10 cities could produce 30 copies of a resource), but use the "no limit" mechanic so they don't take up National Wonder slots, which is especially important for small civs or One-City Challenge. Because they benefit your entire civilization, I think they should have more of a cost attached; thus the 1 citizen employed.
For me, Power Plants work, Foundry does not. Estate gives you a free Noble, so I think in addition to its other bonuses the negative effect is offset enough. Workhouse is clever, but probably needs to be ramped up to be worth it. It's only +15% production.
City Gatehouse is an oddball. It's just a defensive building that employs a citizen. We already have the Palisade-Walls-High Walls line and the Castle-Star Fort-Bunker line. Another defensive building on top of that seems unnecessary. Castle Gatehouse has a use because it uses the "no entry" mechanic. City Gatehouse could be easily combined with either Castle Gatehouse or Watchtower.
The one place where I WANT to use this mechanic but haven't is the resource-producers like Brewery. These Wonders benefit your entire civilization without a real opportunity cost to the city that builds them. They are National Wonders only to put a cap on the total amount of the resource floating around (otherwise 10 cities could produce 30 copies of a resource), but use the "no limit" mechanic so they don't take up National Wonder slots, which is especially important for small civs or One-City Challenge. Because they benefit your entire civilization, I think they should have more of a cost attached; thus the 1 citizen employed.