"not interactive" when you can dodge her E and make her ult worthless, or bait her into ulting and walking/dashing out of it so she can't get more tentacles?
Then that just feels shitty for illaoi, doesn't it? If you baited it out of her is one thing, but what can she do when her giant window of power is gone? Close to nothing, or at least nothing meaningful. There is just so much power loaded onto her ult that the rest of her kit just can't compensate when it's down. That seems like a big design flaw similar to old Heimerdinger, who was a turret bot.
yeah, generally when a champion has a really powerful steroid that you can't deal with, you disengage and come back when it's over. how is this any different from yi, nasus, fiora, darius, trundle, jax except for her being the only one that's not guaranteed?
Most of their steroids aren't powerful enough to equate to "If you fight me with this up, you WILL die." The exceptions being Darius, whose window of power is delayed and only gained through an extended fight or ult ks, and maybe Yi (although now you could make an argument for nasus now with the ult buff). Illaoi can just right click (or in a 1v1 case wait for a well timed E and then right click) and BAM tentacles around you. Between the damage, the healing, and the aoe, if you're not dead in the first volley there is absolutely no reason to try anything but run, as it'll equate to nothing. In teamfight scenarios, this is HUGE, as popping this mid-fight basically forces a retreat from the enemy, and allows your team to pick off whoever they want.
And you want this on a shorter cd?