This is probably one of my favorite offensive skill, but the range feels awful
it work great on tiny mobs but i cant say the same with larger mobs.
Even a boost of the range by 15-25% can greatly improve this spell.
something about it just feels awkward. Maybe it’s partially the range, but I can’t quite put my finger on it.
Yeah you are right the second problem of this spell is its unreliability, if you crit you win (95% crit damage with insane dots following the hit) but if you dont its like you pressed a key for nothing.
To give you an exemple i will kill Shar’zul under 10sec if i got 2 Blade Arc crit, and in ~20sec if the 2 of them dont
Time to pray RNjesus 
That’s a completely different issue. A lot of CD skills are like this, e.g. Grenado, TSS. And I don’t recall if there’s any build based on these that can do Shazgul in 20 sec.
On the OP post - it seems your issue with it is that some monsters are just too fat and don’t clog well enough into Blade Arc’s limited AOE, am I correct?
Correct :>