Since KOG has been improving the movement, cancel points and stuffs for smoother combo, it won't take you so long to optimize your way to play Raven again.
But I have to point out that:
1. PVP is no longer a place for skillful players, but GEARED players instead. I did some PVP with Metamorphy [3rd job of Dimension Witch] (which is extremely dead in Void because her commands are either seriously lag sensitive or mana feeding, only ^^Z is usable) and managed to burn 90% of others' HP without KO them, later that bullshit just awakened and oneshot me with 2 skills. If you want to show off your beautiful and flashy combo in PVP, you better give up this idea and play PVE, or just kill Lowes with your decent combo in training room. I don't suggest you to do meaningless and time-wasting stuffs tho.
2. PVE doesn't need flashy combo but 24/7 skill and potion spam, endgame gears are required as well. In endgame dungeons, if the commands of specific classes are recovering huge amount of resources, dealing high damage or attributed with buffs/debuffs, no one would use them, unless you are going to do secret dungeons and heroic dungeons only before you decide to uninstall this game.
3. If you have read point 1 and 2, you will realize that "flashy combo is practically useless nowadays". Therefore, do not waste your time on it, play it casually or just give Els up. The more hope you have, the more despair will you receive.