Small Kai'Sa Suggestion
She needs a little something to enhance her void-ness. As far as I can tell, the idea is her suit more or less protects her from the corruption, and that's fine, but what about before she had the suit? She should have a scar, at the very least. I think a good way to do it would be a Prince Zuko style burn on one of her eyes. Maybe she had a run in with a Vel'Koz style monster, and she got burned. A little thing like that would go a long way in making her seem more like someone who has been stuck in the void for a long time.