Ark City is obviously inspired by Free Cities and attempts to expand on the formula and make it more of a personal, crafted experience than a sandbox. However, I have doubts if these expansions are meaningful additions instead of just bloat.
One thing that I do think is a genuine improvement is the addition of "guests" that have manually-crafted storylines and interactions.
For my concerns, one of the big differences is that the player has to navigate to specific locations in order to take actions there. While you can say that this creates more of a sense of place, it also makes it clunkier to do anything. Then there's the combat minigame that is basically just about having significantly more stuff than your enemy so you don't take too many losses. Then there are all the unused upgrades, trophy items that serve no purpose, and what seems like a command center that's actually a long-winded tutorial center. Theoretically, these could be all filled out and refined to be meaningful, but the sheer number of half-baked ideas has me less than confident that they'll reach that state.
Somewhat related: Why is there an option to go suck dicks in a bar? The setup is that the player is the owner of a super advanced cyber castle with legions of fighting bots and is generally above the law. Isn't this supposed to be a power fantasy setup? Or does throwing that setup away make it better for people who are into that? Even then, I think there's a lot of potential for disappointment when trying to pander to radically different fetishes in the same game.
Ark City the potential to be something interesting and I'll keep an eye on it, but there are just a few too many ways I can see it getting off track to set my expectations high.