I really like your ideas - i think Maeve needs some serious change/buff to be at least somewhat competitive, mainly concerning her speed. There are two things however, that im having issues with:
1.) Having two charges on an improved pounce together with a reduced cooldown of 9 lives already sounds a lot better than risking your life for as little as 400 melee damage. But what i really hate about her right now is the absolutely abysmal speed of prowl, and giving her the option to use it more often doesnt fix that. I know some people may disagree when i say this, but considering how incredibly low 800 dps is (with the new pounce), she needs to be a lot faster to compensate or else she will become kind of an even worse version of Evie. That some players lack the necessary skill to hit her at full speed shouldnt be used as a counterargument, since Maeve already takes a long time to kill enemies herself.
2.) The other thing im worried about are the developers. Tbh im new to the forum, so i'm not quite sure how much they care about it but as far as im concerned they will never even come close to the idea of ever rebalancing Maeve at all or even listen to what a minority of the community has to say about her state. This may sound pessimistic, but I just dont know how much sense it makes to create a threat like this other than to dream about how Paladins should but never will be.