I am almost done leveling my Klingon so i don't need quest content anymore but others sure will. PvP is ok from time to time but Klingons lack players big time so i'd recommend to let us join Feds for Fleet actions, Raidisodes and stuff that doesn't require to kill either faction now or in the future. Lore wise it happened multiple times when Klingons ans Feds joined each other to kill a greater threat but after this they were enemies again. Romulans are the number one foes of both Feds And Klingons so joining to fight them would make sense. We need challenging Romulans then, maybe a future raidisode could adress that. Rewarding missions in Romulan space would help also (Big Dig style).
We Tribbles know what the Klingons do when our backs are turned, heh, even when they are not turned.
Go eat your targs and stop suggesting such drabble!