The rays themselves are not actually a great or efficient source of damage. Bolts have a faster TTK as they are not limited by a global cool down and are more efficient. Archery is much faster as well on top of being vastly more efficient. The reason rays made combat feel faster is because it became harder to kite with no warning instant cast rays and easier to push melee. This is because the second you straight line you eat rays in the back so you are forced to constantly juke when pulling away or kiting. The aggressor has the benefit of being able to straight line in pursuit so its easy to see how they can always get into melee. If the DFO forums were still around I suggested shortening the global cool down and replacing the missing cool down time with a short cast time with a built in jump shot instead many times. You would functionally still get the same number of rays per minute and be able to play nearly the same way with them, but they wouldn't be as strong to combo, wouldn't be so easy to push melee with and wouldn't force everyone to constantly juke all the time because you would have an actual cast time to function as a warning, granted it would be short.