SF is rife with a variety of ways to radically improve the body.
Cyborgs, nanotech infiltration, cyberpunk chrome with chips in the brain to teach skills, a variety of symbionts, Adamification, just general improvement as the brain is upgraded...
Hmm, perhaps not as many as I'd thought.
Tom Day has been Ascended, partially. Its a process of making the whole body work better as a step toward become totally superhuman.
Tadeusz has a Star Empire of Lekostia cyborg skelaton in his body which has a few other qualities than just 1000 pound strength although that its primary use. Its alien tech because as far as he knew, he was the only human in that particular universe.
The Symbiont Academy Symbiont has a number of qualities. Many of these are things you have to train yourself to access. Stronger, faster, more durable are the beginning of it.
Leikou of Neo-Tokyo, a verser who shows up in Rocky Mountain DMZ (I've used her there anyways.) is an illiterate street samurai aka cyberpunk with wired reflexes and talons.
MJ's dop went to Starsong, got his asthma and sight cured. Starsong has such formidable technology that people complain about medical bills involving being turned into a whale by nanotechnology. He also had some skull armor slipped in. His mods were close to trivially simple for Starsongers.
Whisp, of course, has been turned into some liquid metal, but that involved magic.
Not that an IP that included magic should be disallowed.
Nanotech is often used for healing wounds very rapidly.
The cyberpunk 'jack' in the back of the head got used in Andromeda on TV. It attaches the brain of the human to a computer.
Nanotech could also be used for wireless links by hand and eye signals with local computers as in "Deepness in the Sky".
Symbionts often typically filter out poisons from the body. Thus the person can run longer and faster. They also often offer a better control system for healing, more intelligence is involved. (I think this may underestimate how intelligent the design for healing already is.--This is a typical fault of Bio-improvement stories.)
What I would like: Five improvement packages, at least. One would focus on almost totally mental improvements. It might be a Psi IP. If you could merely look at a fence, and know that it was six feet, 3.5 inches tall, and you could know just how much force your legs were producing....well, one could do interesting things with that sort of precise knowledge.
Another Ascended.
Another a cyberpunk street sam.
Another a cyberpunk chiphead (have a slot in the back of your head where you stick in the latest download a la Matrix....but the 'punks had this idea way before Matrix.)
Another an old-fashioned cyborg.
And a nanotech.
And a couple symbionts....thats five right? Right?
Eric