Custom Controller Vib for Skill?

The very top reason I like to play on controller is that interacting vib from different skills like Poison Burst Arrow or Herald of Ash. And different skills make different vibs. I have to say it's a big thumb for GGG doing this.

Well, for Whirling Assault, no vib at all. Poison Arrow could have a hit vib, but Whirling Assault no? And it forced me to add Herald of Ash to get that vib for hit result.

GGG must miss it and please add a vib for WA.

On thinking of this, why not give us a purchasable vib for the skill we use to get a special hit result?