I like the Z level as it adds a lot of potential organic/reactive mechanics to the game: floods, pits, traps related to those things, more advantages to flying units and ofc the things 7advantages that the dev already wrote about.
The problem is that most of those interactions do need taking out the actual limitations. Communication between levels for those things to work would need to be multiple (by pits & stairs) and the size of each map should mach the ground level.
The memory problem could be lessened by limiting how many underground levels you can go down, as I think it probably will be more fun to have those level interactions in 3 or 4 levels than 100 levels of repetitive randomization.
So to live up to that potential it needs work and to align to the devs intentions for the game.
This reply was modified 11 hours, 8 minutes ago by Naur.