The UK won't rejoin the EU for many years, the public demand and political capital just isn't there yet. but it could join EFTA much more quickly and easily, and that would solve almost all the "in-out" border issues facing the Scottish and Welsh independence movements.
In fact, the prospect of an independent Scotland rejoining the EU might well even help speed the EFTA process along for rUK.
I agree it's an important topic, but literally nothing makes me less want to engage on a topic then when someone says "we need to talk about X"
Just say what you want to say, OP. I'll decide for myself what I need to talk about, thank you.