Ok, so question: To what extent does the "National Question" axis overpower the "Left vs Right" axis?
I know this is an unlikely scenario and that the SNP is easily heading for a majority, but let's say that, against all odds; Labour+Tories+Lib Dems get a majority over SNP+Greens
At that point what is the likeliest scenario?
A Rainbow Coalition of the 3 unionist parties? Or some sort of SNP minority government, propped up by Labour or the Libs?
No way a rainbow coalition happens, the reason Scottish Labour lost so much support after 2014 was for standing with the Tories during the indy referendum.
In any event, were one formed, it'd be incoherent, & thus at least somewhat incompetent. It either wouldn't be able to discipline its factions the same way that the SNP does, or whoever the junior partners are wind up getting destroyed on the back of austerity policies. In either case, the SNP (possibly with the Greens' help) would get back in again fairly quickly.
Tbh this is me basically just making a dumb comparison to Catalonia/Basque Country
Yes such a government would be very incoherent but the point isn't that but rather to "Stop the dangerous traitors from the SNP who want to break up Britain".
It does help that in Catalonia/Basque Country, the secessionists are also split into left wing and right wing parties; with for example the current Catalan government being formed of both bourgeoise rich nationalists (JxCat) and borderline communists (CUP) for instance.