Picking up on Schweik's postings today, there's been a development in voice technique over the last 20 years you don't mention, particularly in the UK: Natural Voice. It'll take you back to your own roots, and that may or may not involve regional accents. And that, I think, is what makes a traditional singer: they are who they are - and are not who they are not. It's something psychological, built when you learn to talk, and doing something else comes over as "just not natural". It's the problem with the horde of mid-Atlantic clones, they're neither one thing nor another. You lose tone, you lose identity, you lose commitment to the song.