Here are some things I'd like to see:
- perpetual with moon phase
- manual wind split second chrono
- an 'hour striker' watch like the Ulysse Nardin (without the automatons)
- a Chronom?tre Souverain-style watch with tourbillon that is seen only from the back
- a plain hand wound watch with the original Journe 'look' (screwed on subdial)
- a world time watch
- a Resonance equation of time - one dial with gold hands for solar time, the other dial with blued hands for mean time
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and the best for last:
- the return of <= 38mm cases!!