Good idea. With the new tech tree, they are even called Nature Preserve so it is named appropriately. Maybe they should become available a little later for marshes?A couple thoughts from my last play through:
You ought to be able to build forest preserves on marshes. It doesn't allow the tiles to contribute to city growth or production but gives you something to do with the tiles and gives a lot more civs access to a city that will actually make effective use of a national park.
Sounds good. I could think of a couple of spots where that would bring the historical value of a site to the fore.It would be interesting if certain historically key waterways gained a commerce bonus applied similarly to how capes are applied in the game. The straights of Mozambique, Gibralter, or Malacca and the Suez and Panama canals aren't the most interesting spots on the map as it is, largely because double speed through oceans renders these routes inferior. A straight terrain feature would just add a couple extra commerce to a few choice tiles and make them more interesting targets for colonization. There could also potentially be scripts that drop a few straight features on specific tiles if cities or forts are built on specific tiles. For example there are three tiles that can serve as the suez canal and if a city or fort is placed on any of those three tiles two straight features could be placed on the coast on either side of the city/fort. Admittedly, the canals would require a lot more work than the straights but I think it might be fun.
I agree, I wanted to do this back in the day already but it seems I forgot about it. Actually it mostly needs some investigation as to what the critical factor is that stops the respawn on collapse, because the code for that is already in place. Maybe some rules need to be tweaked a bit.In the games I've been playing lately I usually am not a major player in Europe and someone is inevitably turning into a juggernaut that builds a pan-European empire. Often it's the HRE but sometimes Russia, Spain, or France. The problem is that they grow so large before they collapse that when they do collapse whoever the survivor is (there's usually only one maybe two European civs left poised to conquer the plethora of newly independent cities), it also grows to titanic proportions and then collapses itself leaving the same void for the one or two civs that happened to be reborn since the last mass collapse, thus restarting the cycle. I think the only thing that is really missing is the rebirth side of things. HRE or Spain ought to be able to build a giant empire before inevitably collapsing but they shouldn't just leave vulnerable independent cities in their wake. From a certain point on for each individual civ, collapses of other civs within their core ought to always yield a rebirth. While that might be appropriate for a nation like France or Spain as early as the 16th century, it might not be appropriate for HRE as an Austria until much later, while later civs like Prussia or Brazil should always rebirth if an imperial power holding their core cities collapses. Maybe there needs to be a critical mass of cities before they get a rebirth but if let's say Spain and German chop France up in a war in which Spain takes Bordeaux and Marseilles and German takes Paris, should Germany collapse I don't think it's the end of the world if only Paris is reborn as a French civ.
Okay, I think the important factor here was that respawns from collapse obeyed the same rules as regular respawns as far as the rules go for when they can occur. In particular, every civ had a set of time frames where they could respawn, for the Europeans that only starts in the 1700s. So instead I changed the rules so that respawns from collapse can always happen after the birth of a civ, as long as its not past its historical fall date.I agree, I wanted to do this back in the day already but it seems I forgot about it. Actually it mostly needs some investigation as to what the critical factor is that stops the respawn on collapse, because the code for that is already in place. Maybe some rules need to be tweaked a bit.