Thanks to Jazzphil for the thoughts there, I do understand what you say about 1-3-5 of one chord is 3-5-7b of another - but you still don't get that 3-semitone gap from the 1 to the 3 that to my ear signals minor. The stuff I see on YouTube openly concedes that you can only imply a minor, but it's a distant and ambiguous suggestion of the sound I want to hear.
I think I like Tony's idea of G6, maybe I'll give that a go. I do of course understand that one doesn't play a dobro in a chordal sense, but uses rolls, slides etc. But I still want to be able to play 2 notes together with a 3-semitone interval between them sometimes, without moving the bar. I could always cheat and stick with the PSG and one of those fancy pedals.....
