This could be a server option of perhaps a bad flag (RA - RicoActivated - Your bullets only kill after a ricochet)
Secondly, a spin option, which would put spin on a bullet after a ricochet.
This would effect the bounce angle upon its next collision. It would only make sense on match servers though, where you have some chance of knowing a bullet's history, so that you can anticipate how it will ricochet and therefore avoid it.
I think both of these options could add quite a lot of skill to Ducati matches especially and to the 1Vs1 servers.
Of course spin could allow a bullet to travel a curved trajectory, but this, in my opinion, would probably make things overly complicated. It might be fun to shoot around obstacles though.

Anyway, anybody else think this might be a good idea?
I expect it would be quite easy to implement, though it would require a server patch.