"...and are you otherwise reasonably happy with the present rules?"
No. I think they complicate things for both setters and players and, for me,
have removed a lot of the fun factor.
I would prefer going back to a simpler version:
...Enter a correctly guessed letter in each position it appears in the puzzle.
...A maximum of 7 or 5 incorrect guesses.
...Only whole puzzle guesses allowed, with an incorrect guess counting as 1 wrong.
I wish other people here would let it be known what they think. I may be the only
one who feels this way. I quite often find myself in that position.
Please do post another. I got very little sleep last night, so I don't know
how much longer it'll be before I zonk out.