I read recently -in a book of silly lists that I got for Christmas- that the tune for "God Save The Queen/King" was not an English tune in the first place.
Apparently it was originally a song written by French nuns praying for a successful outcome of their King's operation for piles.
I forget the exact wording of the original French version- but "God save our King" would be a fair translation.
So amongst the reasons for wanting a new national anthem, i.e
It's a dirge.
It presumes on an ongoing war with the Scots.
It's a prayer to a Militiary Specification God.
we can add:-
It's a rip-off of a French song anyway.
Cheers
Dave