middle tree t a point is only good in pve, and it locks you and your whole team in place witch especially considering enemies and bosses and even night fall strike is to a point almost similiar to a normal rift. dawnblade grace is also a super that fully depend on allies solo content is not a good idea while void and and arc are effective especially in aoe and crowd control witch is the most significant impact in pve. dawnblade has minimal ways and barly none to even have crowd control in any way especially spuper also chaos reach is the most favorted especially in radi bosses. compare dto grace a hunter that anchors seems more effective and less riskier then a dawblade, especially when grace has to use all its enrgy in one shot and can move the effect unlike anchors. also arc especially arc has storm crow witch makes it even more efective in pve to the point infinite gernade mellee and class ability. chaos rech and void has ways to restore super enrgy especially with devourer and the pulse thing, in pvp ther eboth considered the best warlock class especially nova witch can instant kill with a hand held gernade witch not a single other warlock class can do that. base on raw power and damage arc and void has far more aoe and even higher single damage then what dawnblade could ever suceed, this is why i focused on solar warlock majorly. base on overall efectivness, solar seems really lacking and very conditional even more then arc and void when it comes to damage, survivability, and enrgy regeneration. unless you use grace with a bunch of friends, and that very conditional on it own especially with frinds that live the ther side of the world from were you are.