Proving once again the only way to fix something is to increase potencies and worsening the problem with Thundercloud by doubling the procs. It's definitely a boost for stuff like A1 and at a base of 780 Potency. Thundercloud is the best single target spell in the game. With that potency so high, you can recast a proc under 18 seconds to have a better Potency than F4. Under 21 second is barely a lost.

That's not QoL, that's stupidity and display you don't know how to balance your stuff.

Regardless what we think. Spell Speed gets a pretty good boost. Not to mention faster cast means higher chance to use a filler Thunder. It also means a better window to use your procs.