I had to laugh when I read this suggestion … I thought it was just my own lack of ability with numbers when I just couldn’t figure out the difference between thousands and millions. Calculating how much food I had to feed my heroes required me to take it to 800k, for example, because I just couldn’t see if it was in millions or thousands.
Please, commas, periods, dashes, stars … something, anything to help me
I’m guessing localization simplicity is the reason this wasn’t originally implemented, since different places use commas and points differently in numbers, as @DaveCozy noted, but it would certainly make it easier to read large numbers in the game.
Dots vs commas shouldn’t be a problem at all, those types of output and localization options are fairly trivial, it’s not really an issue for them to overcome. The larger problem is probably formatting, like worrying that numbers will not fit, or will wrap unexpectedly or something like that.
Maybe just add a toggle in the settings menu where the player can select None, Commas or Dots. Seems to get over any localisation issue and gives power to the players.