Keep my natural self

Just gimme the character creator and a super long time to work with it.

Well, aside from the obvious "make myself my fursona" bit...

I'd get rid of my ADHD, or at the very least get rid of its interaction with food and exercise. It's been such a burden, to the point where it's singlehandedly prevented me from taking up new hobbies (because I know I won't stick to them and can't afford to waste the money), kept me from focusing on new certs (because I suck at self-directed study), and it's the single biggest reason why I'm overweight. I fucking hate it. ADHD superpowers, my ass. This is a fucking debilitating disease, and even with medicine it still sucks.

Ignoring the obvious "change myself into a magical wolf man which ends up getting dissected by some government agency", probably just a tune up.

There's a lot of mostly minor and cosmetic stuff I'd fix. Removing the need for glasses. Fixing my teeth. Ridding myself of a genetic thing my chest does. Fixing that weird pop my toe does every one in a while. I'm not really interested in being mr muscle strongman who people think women flock to; it's just not me.

Mentally though, I'd like to see about removing my depression/anxiety stuff, although I'm not sure if that's allowed or not by the rules. That's honestly probably the biggest thing holding me back. I'd keep the autism though; being neurodivergent isn't a crime.

Balls the size of peas and a cock fat as a cigarette. That oughta get the guys and gals going

It might be nice to try out different hair textures without having to put any work into it.

Other than that, the only scifi dream I would have is a proper GUI/HUD reporting system so I can just get the raw data about when things are going wrong.

From the genetic baseline, totally, if that'd fix my hair loss and dandruff, also a fuller beard. I'd probably give my hair slightly lighter brown color, too.

I would love a character creator.

I'd resolve my numerous health issues and take on a youthful appearance.

I'd imagine if this was ubiquitously available to everyone we would see a majority switch to their likeness to their favourite characters from whatever media they prefer.

Heck yeah... I'd get better vision, better spine, ... there's a plethora of quality of life things that I think most people would be insane to pass up. On another side, having a sweet of powers that effectively made me Batman levels of ability... How could anyone actually pass that up? Literally just a peak human... Yes please.

Become monke that way I don't have to think anymore.

If I choose to remain a woman: add 2 more inches to my height, lose the genetic stomach fat, improve ability to build muscles. Maybe less curlier hair.

If I choose to become a man: late 20s, dark wavy hair, 6'5, lean build but not skinny. Wanna be a target version of Michael Scofield, basically.

I'd improve the efficiency of my uric acid processing, decrease cardiovascular pressure, and throw in a cat's spine just for fun.

how many of us would be furries? Statistically speaking, i want an answer.

i love fucking with people, so it's an obvious choice.

fix my heart and make myself cis. no "improvements"

I'd not change much, just my suicide weight, a couple of functional issues, and a few troublesome moles.

Can I use the button multiple times? If so, I have several experiments / experiences to do / have.

If it's a one time thing, I'd probably stick with the same genetics. I got pretty lucky, and I'd hate to make a change that I later felt negative about.

Other than the assumptions OP mentions in the prompt, I would actually add a prehensile tail... I think that would be a super fun and useful appendage to have hehehe