Thing is, they already have plans to address the offside issues, and they are addressable, so I wouldn't be overly concerned in that regard. In a few years' time it will definitely be much better than it is now. Hell, with a few tweaks to how VAR works they could start making it better immediately if they were of a mind to do so.
The real problem is subjective calls like the McTominay foul yesterday and all the fecking about with "clear and obvious", where I have no idea how you fix it. In the long run that's way more of a problem.