Is there a connection between population size and dominion spread? For me it would be logical if a 20000 people province changes faith/candles less fast than an 1000 people province. Does the game take population into account?
an interesting question. I never thought of it or read anything about it.
Intuitively and empirically I'd say no but it would be interesting to seriously test it.
The dom mechanics seem pretty clear and leave no room for a population effect. It wouldn't be the first time something in this game didn't work the way it was thought, but I don't expect it.