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I've been looking forward to seeing what new developments might be next, and this looks a cracker.

You're right. In that case, the Longines COSD, or Longines Weems with locking bezel. Maybe the Smiths DeLuxe Military.
As far as I am aware, none have been properly re-created, so time for someone...

I would like to see Eddie's take on the Lemania SAAF (the Lemania 1872 version, not the 5012) using the Seiko NE88 movement, suitably modified (no date, no 12 hr subdial, possibly manual wind)

Do you mean Everest Traveller, or Baby DN Voyager ?
My guess is the former (he said, in hope).