A few problems with Illaoi that potentially need addressing.
With 6.3, Illaoi was given a nice but subtle QoL buff, while also nerfing her late-game pressure by allowing multiple people to cleanse their broken spirit debuff.
There's another few issues concerning her E ability, now made all the more prominent with the release 6.3.
Duskblade will activate when the player hits the spirit with an auto attack. This could be intended, but I honestly feel it shouldn't be a thing, Illaoi already struggles and she doesn't need small little problems like this affecting her late game. It's going to turn into assasins or whoever else has built a duskblade from actually hitting her spirits lest they waste the active.
Additionally, this also procs Thunderlords. The spirit is obviously considered a "Champion" of a sort. I don't suggest changing the mechanics to behave like a creep, lest we have problems with tahm and syndra.
But I feel something should be done.
She needs buffs, period. Small little problems like this are only gonna be an issue for her in the future.