I don't necessarilly believe that it ought to be the official national anthem. It harks back to days seven centuries past. I think a good national anthem ought to have a vision for the future. A good example of this was the old Soviet anthem, which expresed all the optimistic notions of egalitarianism and internationalism. "Flower of Scotland" is a good song, but I don't think it has that visionary quality. Besides, none of the British nations have an officially recognised national anthems, one of the reasons being it's hard to have one when you don't have an officially recognised nation. When we do get independence (Which won't be very long! we'll think about it then.

Incidently, the Glasgow broadsheet newspaper "The Herald" ran a competition last year asking for someone to write a new national anthem to commemorate the occasion of the inaugaration of the new Scottish Parliament. I don't know what happened to the competition, but I have not heard of a winner.