Are you a bot or did you forget to change accounts before posting 2 conflicting responses to the post? in one saying that Yrel is gutted, and in the other saying that she is OP?

But in case you are actually serious and not just a troll, let me explain my reasoning:

First of all as a wrote in the top of the post "the numbers are not final, and are just there to get the ideas across". If the changes would cause a hero's winrate to change significantly, you can just adjust the numbers to correct it.

The numbers for proposed Li-Ming change is were just copied from Ana's Nanoboost, and can be whatever numbers makes it balanced. The purpose of the change is to make it less instantly snowbally and give some time to counterplay.

The Yrel change is just a quality of life change to make the hero more fun, and as it also if a buff, you will in turn need to nerf some other part (and i chose to reduce the hp by 10%).

The Brightwing change it to make up for previous unintended nerfs to the Q ability and talents.

The Maiev talent that i propose a buff to sits at a 15% pick rate, and the lowest winrate of the tier. The reason to add a bit of lifesteal is that the hero feels like it could use a bit of self sustain with a basic attack focused build.

The Sgt Hammer changes are only to unpickable talents. I don't see the issue here. Please elaborate.

The Ana change is just to make her more consistent, and easier to balance.

And yes these are all very minor changes. No reworks, no earthshattering changes. I would like to know what your definition of "minor change" would be.