K2K Koos wrote: …Still something Apple needs to improve. There is no way you can take your external drive to friends or family that own Windows equipment and share photos with them from there.. really , really annoying.
Perhaps you have misunderstood. The Photos Library needs to be on an appropriately Mac formatted drive. The Photos Library is a database that can only be interpreted by the Photos app. It's true that a Windows machine won't be able to read such a drive, but Windows couldn't read the database no matter what drive it was on. There's nothing at all lost by not being able to introduce your Mac Photos Library to Windows. But Windows can look at jpgs.
So, when you export picture jpgs from Photos, those will work on any drive that's readable by any machine. Export the pictures, put them on cheap ExFAT flash drive, stash that in your pocket, and you can show them to anyone.
In the same vein, Windows can't read a Mac Notes file either, even though Notes is less picky about drive formats. But if you export a note as PDF, then it can be read anywhere. Mac apps work only on Macs; Windows apps work only on Windows. Nothing new here.