As an example of 'animations sell the class/job fantasy', we got Glare 4 this expansion, 3 uses of a strong hitting instantcast spell per 2mins.
But imagine if instead it was Tornado, Flood and Quake as each of the 3 hits. I would expect that, 'more twinkly lights' wouldn't have as much 'impact' in the player's minds during the reveal, as 'you get some of the long-lost Elemental aspect of the Job's identity again, also it hits like a truck because it's the 'ultimate' spell of that element'. Each of the three spells would also, due to being seperate actions (instead of Glare 4, 3 times), would be able to have slightly different effects. For example, Tornado could deal part of its damage as a DOT (and because it's AOE, this means being able to DOT a pack of mobs in a dungeon)
People were very excited for SGE when it was revealed, precisely for this reason. They saw Pneuma, it's a big fat laser that has a chargeup time, and we got excited cos it looks like it hits hard and that's cool. Turns out it hits hard with green numbers, but the point stands
As for AST versions, probably the one I wrote, no bias here no sir
If not that, then probably HW AST, but specifically 3.2's version. The 3.4 version was far too strong