Auto HDR is nice. New Microsoft Store isn't doomed to fail like the original "new app types only" mess but it's severely limited in increased utility until they finish the Android portion they promised which didn't make the initial release. The native window tiling and set options are much improved, especially for larger displays. The redesigned Settings app feels like an actual improvement on Control Panel rather than just a touch focused replacement. Also support for new hardware designs like performance/efficiency core sets coming out now.

But if you're looking for groundbreaking features you just have to move over for there aren't any. It's really more a "standard 6 month Windows update that happens to represent the next compatibility/support group" than "a brand new Windows version after the last one sat stale for many years" type upgrade. As Windows 10 nears its end of life I suspect the disparity will grow more but as of now I'd take Windows 11 as heralding what is going to be supported for new features for the next 10 years not as an instant revolution in features you're missing out if you don't jump to it immediately at release.

As such these projects will become much more useful/interesting in about a year or two but it's good they have been started now.