30 second cooldown didn't stop people building around EK eldritch tempest, bugged or not - and this require people having at least 5 wizard level and lock them into a T5 tree. This spin with multiplier is a racial tree where people can LR out the rogue class with no limitation on what combination of class people can use with light weapons.
Where did you quote "everyone" from? The point is, when there is a particular skill that has multiply damage, there is a tendency to restrict end game build further for min max purpose.
How do you know what the animation look like when they haven't release the lam preview for people to see?
Dev could improve the limited end game build by moving skill with multiplier to T5 and or move some of the core abilities higher core class level. A bit of consistency between class. What is the reason a ranger multiplier a level 12 core, while a fighter multiplier a level 6?