I've been eyeing up new monitors because I really think I could get on well with MacOS, and a 5k model is tempting. The trouble is, a 27" monitor (nor the UW equivalent) isn't quite large enough for me. I work primarily in Word and I like to view a single entire page at a certain size. On a 34" UW on Windows I can just manage it by auto-hiding the ribbon. MacOS Word for some reason doesn't have an option to hide the ribbon, making the document a little smaller than I want it. Since this is my. job I can afford to be fussy over the details.
I think you can turn off the ribbon, but not autohide it like it is in Windows.
I'm in the same boat regarding 27" monitors, I feel like it's small but I love 32" screens, the problem is that they're still low res (32" 4K is only 137ppi). 32" 6-8K would be 200+ ppi which is very good but there are only two of them in the world (Apple XDR and Dell UP3218K), and both cost £3500 or more. I'll immediately buy one of these if they get to £2000.
I'd also love to get a high PPI monitor for my Macbook, especially since I have switched over from my PC full time now. The only exception is I still use the PC for Sim Racing and to that end I cannot give up my Predator 35 inch 120hz 1440 monitor. There's also no chance I would 'add' a monitor to my setup as I like a relatively minimalist workspace plus there's no way I could clear the added cost with the accountant (read Mrs ).
Ideally an UW or even a standard 32inch 16:9 4k monitor would be the ticket but it would also need to be capable of playing games @1440/120hz(min).
I honestly wouldn't call a 32" 4K screen high PPI. It will add up to only 137 ppi, similar to a 27" 1440p. It's not poor, but not high either.