The Trace On System, abbreviated as either TOS or TRON are a series of epidermal implants and nano-fiber filaments implanted to improve the reflexes, balance, and agility of the augment wearing them.
Blurring the line between exoskeletons and cybernetic augments, the D9 is unfavorably comparable to the Chemical Augmentation System.
By the Cosmic era, almost every part of the human body is replaceable, including of all organs, the brain.
When the Liberty special forces medical research and development teams needed to rebuild man, they didn’t do it by halves. The result? A suite of augmentation so pervasive, that most modified operatives are more effective on their own than half of the Liberty marines put together.
When running a new party, get around the question of plot density by having the first discovery to be a deck of fate, or whatever you call it. If you use a real deck, you should definitely stack it to have the desired outcome, which is to curse the party to attract weird things to happen and involve them. This should not be told to the players at the time, so that they won't just up and try to get themselves 'decursed'. Though quite why they would want to is beyond me.