Tension - I suspect that we've been outliving our means for a while and any government would have to make very difficult choices, partly because of the banking crisis/recession but partly because we quickly forget how things used to be and keep hoping for more and more public services. Eg I remember hearing a friend complain about her 3YO not getting a free place at nursery until the autumn after she was 3. But,only a few years previously 3YO's weren't entitled to any free nursery provision and before that 4YO's weren't entitled to free nursery provision. I'm not arguing against free child care just making the point that public services are expensive, more now with an aging population and fantastic, but expensive medical advances than in the past. Something has to give regardless of the government. I think that's why the labour party isn't promising to reverse the conservative decisions.
I could not agree with you more about the current government gambling with the future of UK/Scotland. At the very least, independence should only have been promised if there was a two thirds majority in favour IMO. A small majority yes vote would be awful.
The reason I suggested spoiling your paper would be to have your 'don't know' counted. Just a thought as no-one else has mentioned this. Just because it's not like a GE where you can vote for a minority party as a protest against the majority party.