[Senna]

The thing about it is that each element has its own bonus them. Not all lightning magic/skill can crit so keep that in mind as well.

I'm not disagreeing that Lightning isn't strong, I just don't believe the 'MURDER MURDER I LOST TOO MUCH TO THIS, KILL IT' approach is needed.

Wind - Push and extending range. (You can kite)
Light - This is mainly priest/curate. Other light applies glow or light shaft (outside of youkais), or archer (Cough)
Dark - This does need some help, sure but as far as it goes, it blinds.
Earth - Magnet, pull, and if soaked, muddy. In some cases, knockdown.
Fire - Cinder tiles which procs per a step, sometimes burns (Which is powerful in itself) and sticks around for god know how long. We only recently got them nerfed so it's cash money now.
Water - Not many options outside of healing, support, and reducing negative stats but Aquamancer is quite deadly in its own way....*PTSD*
Lightning - Can crit but follows the standard 'Build a lot of skill/luck, weapon crit bonus doesn't apply' format so it isn't always certain. In some cases, can inflict interf.
Ice - This is still powerful, gimmick or not. Either apply frostbite, Frozen, immobilize and create ice sheets that affect movements.

Let's not ignore that those. Each element has its own thing, Lightning's is that it does a lot of damage. It's just unfortunate that it's possible to overstack lightning weakness at the moment.

But as I said, Mist and the lack of lightning resistance items are the main problems. Splash isn't that much of a problem unless you either run Spell thief or combine Tact with Evoker.

Also, lightning crit skills aren't exactly affected by soak or Mist...Only lightning damage.

If Splash is going to generate that much salt if Tact isn't main class, it only sticks around for one damage instance. If it'll affect other skills like Rebia and so on, focus on Mist and Idol then.