Read the post it’s all there 
 tracer needs a buff.
I see opinionated rhetoric and some terrible changes. But no real facts.
I’m looking for facts, you said you’re speaking facts.
But here’s a fact: the general consensus is this community disagrees with you.
I would say that’s a fact for the vast majority of their threads.
I won’t go to the extent that Brig is a cure. Brigitte on paper sounds like a good Tracer counter-which she is, but she also counters a very large portion of heroes that weren’t cancerous like Tracer to begin with (Bastion, Reaper, Roadhog, etc.).
Something like that isn’t merely side effects, it was an issue of itself that had little to work around. That’s why I see Brigitte being as much of a cancer as Tracer, though Brigitte can be toned down easier than Tracer. I personally believe Tracer should be toned down too, but in what ways? Nerfing a glass-cannon hero like Tracer would hurt her way too much, particularly doing anything with blink.
If I had to nerf Tracer, I would increase the amount of damage falloff to her primary fire.
No she doesn’t.
She needs nerfs like .5 more seconds to charge one of blinks again and give her primary more range drop off. 
Yes, I can agree on that one with you.
But you have to handle the blinks. For example- a bad player will lose the tracking on his target while blinking or goes to far with one, uses his recall wrong and so on.
And remember, one wrong step and you are dead since you only have 150 HP
I indeed would be fine with Tracer having only 50 HP as Armor.
More than 400 damage in one second of burst. 3 blinks to allow you to dodge anything you want. A “get out of jail free” card that works as long as you aren’t dead. Ability to assassinate a tank with her ult and a small amount of gunfire. One of, if not the smallest hitboxes in the game. Mobility that makes Genji feel like a Bastion in sentry form. 150 HP or 3/4ths of what a normal “squishy” has. Yea. Feels weak. She needs a buff. Maybe when she blinks she gains 100 armor. Pulse bomb also needs a radius as large as Self Destruct to be effective. Also Hog is unable to hook her anymore since she can blink out of it. Winston’s tesla cannon also actually should heal her because they are friends and he wouldn’t hurt her. She also needs her ammo capacity per reload increased to around at least 150 since Bastion has 300 and he has more HP than her so it makes her balanced then, right?
Yeah I know all the mechanical considerations, but the game mechanics itself is pretty easy to use and puts all the skill on the opponent. I am not some noob who just picked up the game, I have a lot of experience around these characters between three accounts.
do you want 6 dashes ? OH maybe a no cooldown recall. Let’s give tracer no reload, tracer needs love she is so underpowered 
Okay - I talked for a lot of players not especially you. Its good for you if you can play her well and she is not a hard character for you.
Tracer was, unlike Genji, ALWAYS viable.
You’re right, Tracer is ALMOST there. Only a couple more of nerfs and she’ll finally be balanced.
My point is her movement mechanic is very effective and takes little to no skill to pull off just to get around and evade. To combine it with getting lots of elims and damage, yes, but that’s not most Tracers, they just flit about picking people off slowly demanding everyone else be much better shots and predicting to take her out due to her movement and hitbox.