The one watch wish I would love to be granted is a GMT/Chrono/Perpetual with this blue dial.
UN has the GMT +\- Perpetual already and they have the Caliber 150 chronograph. Both based on the same Lemania DNS. Wondering how possible it would be to put the front part of the chronograph underneath the perpetual module. Looking at both movements suggests it would add another 1.2 mm to the height of the movement.