Here is the UDH dropout on a bike. Honestly, on an enduro-ey hardtail, the size of the dropout looks OK.
The different-size DS and DNS dropouts also look fine. The challenge is the asymmetric SS and CS. As-is there is no way to hit both the DS and NDS with symmetric stays.
Here is a mockup with asymmetric stays:
For me, the asymmetric stays are a pretty big deal breaker. I can already hear the “my frame is not aligned” emails 
. I would prefer a symmetric style, with a hood similar to the sliding dropout.
What do others think?
- Are you OK with different-size dropouts?
- Are you OK with asymmetric SS and CS?
- Would you prefer symmetric dropouts
For those die-hard UDH supporters it’s your opportunity to speak up and be heard!