Sometimes I like dense cities. If I want to control a large state, I don't mind the pioneer-spam/land-grab in the beginning, so long as every faction has similar opportunities. However, sometimes I might want to play a more empty world. Perhaps there should be a setting for "settle-able" tile density, apart from resources?
I think this is an Excellent Suggestion! Almost any "Selectable Switch" that provides for two or more states of play, is a good idea in a game like this (assuming that it is not too difficult to program for). Players tend to like the variety; and that in turn increases the Replay-ability factor ...
We already have "Selectable Switches" for such things as overall Game Difficulty, Monster Frequency, Pacing, Magic Strength, and Resource Frequency (as well as the more basic ones for Map Type and World Size). Having a Selectable Switch for City Density just seems like such a logical addition to the List !
For my part, I am one of the folks who has previously advocated a Selectable Switch for: Balanced Starting Locations (which have settle-able tiles, have some reasonable resources, are not right next to an over-powered monster, and are not hemmed in by mountains or seas - such that they constitute a virtual cul-de-sac) versus completely Random Starting Locations (which are just that; but which can be chosen for variety, based upon how many times you are willing to use the [ Cntl ] [ N ] feature). See this discussion thread, including my Reply #1 to it:
https://forums.elementalgame.com/429619
Having variety, and Meaningful Choices, are hall-marks of great 4X games and great Strategy games! Adding an option ( Selectable Switch ) for possible City Density would be another excellent way to improve the Replay-ability of E:FE !