I'd like combo points on the rogue for two reasons.
1) They disappear with no way to redirect them with stuff that "dies" on half the fights. This is annoying as hell.
2) Whenever there are small adds that have to die quickly, we're basically forced to lose combo points. Besides feral druids, I don't think any other class is punished so much for changing targets.
CPs on target is an archaic and outdated mechanism as Blizz allready has admitted. I do not think any sane person would oppose the change. it would be more fluid and more beneficial for reasons allready mentioned above. Even if it doesn't happen its not the end of the day. What does need to change though is the damage of finishers and mainly eviscerate.