Given we have already had IndyRef1 and EU1 the defaults are that Scotland is part of the UK and that there will be a Brexit. There is something wrong about repeating referendums until an irreversible result occurs. I believe Indyref2 would be fairer as two questions:
1. "If Brexit, should Scotland be a separate country?" for Scots
2. "Should we still Brexit if there would be a Scexit?" for the whole UK to vote.
If the answers are "yes and no", then we get status quo.