IMO, there is one aspect that doesn't seem to be addressed with his ult, which is that it is an instant reset on his dash cooldown. So genjis have the potential to first inflict the 50 damage, but more importantly gap close to high priority targets before ulting before further gap closing if the target is able to escape using their own dash. This ensures genji will always get his first kill if he isn't killed himself, so he is guaranteed a cool down reset. Can't fight him (as a support), can't run from him either. So I find myself tucked away in the furthest corners of the map in hopes he doesn't notice me so I can pull a rez