The union flag will probably outdated very soon in the UK. As our mis-government seem determined to push for a hard Brexit, then I can see Scotland going independent very soon so that they can stay in the EU.

I once had a used bitza Strat that came with staggered height Sperzels. If you are going for locking tuners then it makes sense. They were a bit of a luxury as I never use the trem on a Strat, but they did make string changing quicker. To some extent their effectiveness depends on the headstock. If there isn't much height difference between the fretboard and the headstock, then you may still benefit from a string tree on B and E strings.