The situation in Scotland of VAR being introduced midway through next season certainly doesn't seem ideal, although I think pretty much every club has voted for it. I guess it allows players, coaches and match officials in Scotland to have an extra 6 months of regular use of the system and hopefully more correct decisions.
As for the play-off finals, I have slightly mixed feelings. I can understand why some people would be unsure about them introducing them at this stage. But on the other hand, I guess the two teams who've made the final aren't going to change. Regardless of correct or incorrect decisions previously in the season, one of those two teams is going to get promoted depending on that one match so I guess there's an argument you might as well do what you can to try and get any key decisions correct.
I guess League 1/2 final appointments could be affected if VAR was used there. You'd definitely expect them to use SG1 as the VAR and maybe they'd want a referee who had some experience of using it too if possible.