Since u are working on illaoi

Dunno if it may help but imo the problem with Illa it's how hard for her it's to reach endgmae from a bad early, and the recent change just make it harder for her to be usefull outside some specific condition.

I would just like to know if you have ever considered an interaction E/R.

Example:

Removing the flat dmg from R on target affected by "Test of Spirit" and making "Leap of Faith" applying the full damage over a spirit .... turning obviously the target in a vessel.

Basically R would bash the spirit appling full E dmg instead of the flat, insta turning the target in a vessel.

This would be a direct 1vs1 dmg nerf that will focus on her passive since will proc the velles ... but:

1. E will be usefull even in a lost line
2. 2 vs 1 situation will make u able to focus on the right target having the insta vessel status on uor side.
3. Vessel will be a more reliable mech and will be more usefull since u have a way to actually control it.

Playstile whise the CD of the R will not realy impact what are her actual weakness ... it will just provvide an extra tool for laning phase