I consider city management distinct from the expansion and map mechanics. I'll withhold opinion on city tile management until I've actually played the game, but most reviews and players don't even really mention it at all.
Not that that means anything - it just means that I don't know much about that.#
That sounds like you're actually talking about complexity. Complexity is not depth, and depth is not complexity. Games with steep learning curves are often complex games, but they're not always deep games.
Not that that means anything - it just means that I don't know much about that.#
Frankly, it's hard to discuss it since you haven't played it and you're solely going by reviews - this game has a terribly steep learning curve (the reviews and tutorial certainly didn't prepare me for the mechanical depth it does have).
That sounds like you're actually talking about complexity. Complexity is not depth, and depth is not complexity. Games with steep learning curves are often complex games, but they're not always deep games.