I'll consider disks on a road bike under the following conditions:
- The combined setup (frame and calipers) is lighter than my rim brake setup. I pay a lot of $ to get lightweight carbon bling, so this is a high priority for me.
- There is no increase in rear stay spacing. I don't want my heels banging up against my stays on every pedal stroke. The Q-factor on modern bikes is already ridiculously wide and biomechanically inefficient. It should not increase.
- I don't want to pay a lot. I already get great dry and wet weather braking from rim brakes. Scott brake pads are amazing.
- I don't want the stigma of having disk brakes on road group rides. Our group already puts these guys at the back of the pack over concerns over a general lack of experience and the ability to cause mass pile-ups. The disks should be small and stealthy.
- I don't want any hassle over some bizarre new quick-release standard. On my bikes I grind those $%#!@!! lawyer tabs off the forks, so that when I flip the lever the wheel falls out. Like it should. A quick release. Any kind of 'pass-through' or whatever axle is a pain in the ass.