'NSC Supporter', i.e. does what it says on the tin. Or nothing - although I understand that you do want to promote the scheme so that more of us can enjoy the incredible benefits.
Yes, 100% agree, and I signed up the moment I saw the thread. I've been using NSC since about 1998, I love it, and I don't 'do' social media so this is the only real online interaction I have and I'm happy to make a direct financial contribution. (And have a spare £50).
Having said that I do...