Kindred's Execute mechanic needs to have some synergy with her ult.
It doesn't matter how good or bad she is. Just think reasonably.
As Kindred, you will NEVER, EVER ult if you have more health than your opponent - if you know they are going to die first.
And if you do ult, that means your opponent is much stronger than you, and when you BOTH get healed from the ult, that person will continue to be stronger than you, and that person will win.
We all know that every Kindred player ever initiates with her E (which has her execute) for that slow, so that just sorta leaves her at no advantage when she ults. The only good that can come from her ult is when the rest of her team properly utilizes it.
Sooo... Yeah. Maybe apply her E on everyone affected by her ult, without the slow. That would kinda defeat the purpose of having her E in the first place, though. Meh.