There are some "solutions" to the third, but they're all just workarounds to what is a very hard limitation that I don't think we should expect to ever be fixed

There are some "solutions" to the third, but they're all just workarounds to what is a very hard limitation that I don't think we should expect to ever be fixed. I think games just need to design around it. Putting a small mat on the ground gives you a reference to where you are in your room, if need be maybe you just make sure you never stray from the mat. One of the reasons I got an "inside out" style headset is so I don't have to worry about all the cables and base stations, with the tradeoff that the hand tracking isn't quite as robust. Much less faffing about.