@KicsitCsicska, I agree with you here. Imani is so close to be a fully functional champion and all that stands in her way is her talents.
Your Pyromania suggestion is a step up to what it is now; however I think that giving Inferno Cannon DR isn't a good idea, as it allows her to use it with even more reckless abandon. The ability already does ~3k damage over 3s, and the latest buff to the ability gave it the leeway it needed.
Master of Elements is an awesome concept, it makes Mana more useful than it is right now AND it gives incentive to switch stances for different, but equally useful effects. It also doesn't give more free damage, which is always a win in my book.
Something I don't understand though, why does her stance switch have CD, and such a high one at that. Why being able to switch stance freely a bad thing? Most of her abilities have long cast times, and the switching animation itself is already quite long. The only reason for this to exist, that I can think of, is because there's a card that allows her to gain health when switching stances. Why couldn't the card just have an internal cooldown?
Anyways, cool of you to provide champion overviews, hope to see you finish the entire list of champions.