Let's discuss it. I consider it should, from the viewpoint of equality that every skill should be sharpeyed available, not for DPS purpose instead. As I know, only assassinate, meso explosion, powerguard, and summon class that sharpeye no work, and arrow bomb work in special ( pretend to ).
Assassinate last blow already has a critical chance/increase. And it's pretty much a strong skill already, even though Shadowers aren't on the top dps jobs. IF there would be a change on this skill, which I don't think they pretend to, I'd say to remove the dark sight "timer". Waiting up to 8 seconds at dark sight, may be death at certain bosses like HT. And it's not a "fast" skill, which could be spammed and become an OP skill at all. At least that's what I think.