Hi Paul,
Just looked at your puzzle. Neat. Will have to give it a try.
Didn't want to post there because of "no comments about submissions", but here I would say
sudokulover has a winner right out of the gate!
BTW, I'm in Canada. Have done the Spectator for ages, & lately a few Genius puzzles. Harper's is about the only worthwhile source available over here.
Cryptics beat the heck out of American "general knowledge" puzzles.
Thanks for the invitation.