Considering the recent patch changes with Jett, it seems that the chances for anybody to peek with an op and get away alive has lowered tremendously even if they get a kill and I guess that has to do with the OP fire rate and the time it takes to scope-in. Chamber can still use it pretty well but for a gun as important and expensive as an op, it should give a little more value in terms of usage.
Don't know how to better put it, but should Riot make op similar to CSGO's AWP? Currently it is more similar to the AWP from 1.6 imo.
P.S. RIP cNed. Time to learn Chamber.