From Andrew Cunningham, his annual coverage of the annual Mac OS Release is always a must read to really get to know the new OS. This is always the best post about the OS that you will read! It is a must read.
I am not working right now cause I am taking care of our baby, so I upgraded (mainly because of SoftRaid working), and honestly it is a pretty impressive OS so far.
My biggest complaint has to do with iPhone Mirroring. If you want to automatically log into your phone, it automatically sets the sleep to having to enter your password every time you login, which I don’t want on my computer at home. The work around is to use an Apple Watch to automatically login. The problem is my Apple Watch 5 side button has frozen up, so I can’t use it for quick logins (or to ring the location of my iPhone)., though it does let me login.