I lived there for a couple of years, it always brings a lump to my throat when I hear it. I am biased, but I think it's one of the best national anthems there is. It's in Setswana but the words translate to:
Nothing about fighting or war or a struggle for Independence. No arrogance or 'we are...
Then let the British establishment interrupt and argue over the result and so long as they'll be okay in the future and everyone else isn't, proceed with implementing the result and adopting a new anthem. I like it.
At some point in the next 20 years, sadly and inevitably, the mother of the nation, HM The Queen will pass away, meaning her son and first born, HRH The Prince of Wales, will become King. The result of which will mean a new national anthem - 'God Save The King'. Job done.