I'm using the accessability-> Large text feature from the login screen to help make items larger. However, I'd like to request the devs look at adding 4k support on the login screen. I found a fix using the terminal on this forum (which I'll avoid at the moment as I'm not great/comfortable around it yet) but figured it's something I'd raise here.
My monitor is 3840x2560 (3:2) and I use the 200% scale setting to make things easy to read. However, that setting doesn't extend to the login screen.
The installation was harder to do as well as I was stuck doing it with super small text.
These are small quality-of-life improvements to ZorinOS - these little niggles won't stop me promoting this as a great alternative to Windows! It still has a great finish/shine to the OS despite it.