But gender-segregated restrooms are so that multiple people can use it at the same time. Does nobody else see a problem with having men and women naked in the same room?
... what kind of place are you living that people strip down before going into a stall or sidling up to a urinal? Alternately, what the buggery is going on that has multiple people sharing the same stall?
I mean, besides buggery *eyebrow waggle*And kinda' ninja'd, but... yeah. Yeah.
Insofar as practicality goes, iirc it
would cost a bit to transition the male bathrooms into unisex ones (which would consist of replacing the urinals with proper stalls, which I can't see many men actually complaining about, m'self. Stalls are barely slower and involve a lot fewer creeps staring at your junk.), but that would largely be it. Space wise would be about on par, there's not really much that would need to be done to accommodate women (maybe a bio disposal bin for sanitary products, iirc), and... nothing needs to be done to accommodate men, because urinals are the only thing going on there and they're not exactly needed, nor do they really save much space.
Honestly, so far as stall space goes, unisex would be significantly more efficient in many areas -- it's not exactly unknown for one or the other gendered bathroom to be filled to capacity and the other mostly empty. If overflow can shift as necessary without the current issues involved there, things would be better insofar as that goes. You'd still want (at least) two just for maintenance reasons if it's a venue of any meaningful size, but yeah.