Corry, my point was simply that the Bhuna & CTM need no improvement, they're (me thinks) as good as they can be! I don't feel I need to tweak them in any way. My version of madras on the other hand, although loosely based on many others, has benefited from one or two subtle 'improvements', in my humble opinion.
I hope my poor English did not lead to think otherwise. I think the Bhuna & CTM are fantastic, and so does everyone else I've fed them to!