@ianbetteridge Scottish voters have so far managed to find reasons to vote for the SNP to run the devolved Scottish government. Why not just look at the manifestos that people voted for? In any case, the time to ask what the SNP is for, apart from independence, is surely after independence has been achieved.
As for what nationalist parties do next, Sinn Fein seems to be doing well at securing people's votes in the Irish Republic and NI these days. You could just look at their manifesto too?