Lightning burst is a single target ability with no pen at all and gets reflected back on to said player from a BoB. Even without reflect or BoB, dodge/parry still negates that lightning burst. And even still, it doesnt compare to both the Armor Break and Damage Increase that BM/Guardians get. And its near impossible to even attempt a old school mystic/dsj tank build cause of how many points alone Makashi form takes and Mystic. You get roughly 14 points to dip into the Sage tree for an extra heal and maybe the stasis. All the while, anyone can spec straight into guardian/bm/sage and face tank 3-4 people with no issues. The only counter to any of it is someone running a heavy AoE build to bypass the Evasion and kite them down that way.
Maelstrom was the make or break for DSJ/Mystics solely cause it ignored armor and was an AoE. With out it, and everyones already doing so, just spec into guardian/BM with BoB and be the uber jedi. Its at the point where all the Guardian/BM player or anyone for that matter, has to do is wait for the Mystics heals/defs to go on CD and its goodnight 100% of the time to the Mystic.
If folks were worried about mystics dipping into sage, then why unlink the force heal from force drain? Instead, shouldve made any Sage heals share the same CD as Drain, therefore eliminating anyone trying to dip into that tree. Same with Guardians/BMs.