Am I gonna be forced to play another sandbox game? Looks like yes.
It is not that bad, I dug around F95Zone to understand what is disliked in a sandbox game and the general consensus is having no idea what to do.
In this game, you can click Ainz's portrait at anytime and it will tell you exactly where you need to go to progress with the main story.
Of course you will not get all the CGs unless you explore around and speak with the available tokens, which will disappear when they have no extra dialogue, so you can easily navigate all the maps and if you see nothing there, you can move on.
It is one of the reasons why the maps are that basic looking and have only the ground/walls.
In fact, I went with this idea of having bare maps blindly, unsure if people will like it as they look a bit too dull at times.
The advantage of that is that you will not be forced to click everywhere to find something interactable, in a matter of seconds you can quickly spot if there's anything worth interacting with or not.
Of course if you find a feature annoying or feel like it could be improved upon to make it more user friendly, do let me know!