My big gripe about Knights of the Fallen Empire is the endless fighting, you cant go anywhere/do anything without a major fight with swarms of mobs, and the running all over the map to do what you had to do. EVERYTIME something needed to be done, it was way over on the opposite side of the map and just as often as not via a roundabout route.
IMHO, the whole thing takes at least twice as long to do as it should because of the above named stuff. Running all over the map, back and forth and endless fighting gets old real fast. Having to fight every 50 feet does NOT add excitement! I hope that Bioware takes note and tones that crap down on the next one.