Sheesh - in iPadOS you’ve got multitasking, multitouch, full windowing support, external input and monitors, and a ridiculously accurate pen. If that’s holding back, what exactly are you looking for?
I’d still argue a device that size works better with just split screen than the new windowing, but other than the walled garden approach it does pretty much everything today that us techies have been whining about.
File management that doesn't suck, incl. better handling of external drives.