This is technically an orphaned mechanic from a forgotten project but I'm very curious about revisiting it, or at the very least pilfering this section specifically and deploying elements of it elsewhere. For a little context, a "Feat" in this system was something you could do once per encounter at the cost of an Edge point (think hero/action points from other systems), and the Cyborg archetype tended to have superior feats (because if they ran out of Edge, it meant their augmentations had failed and they were all but completely incapacitated)
Bruisers are absurdly strong. A Bruiser may burn Edge and defeat an adjacent opponent with a devastating blow, or smash through an obstacle or barrier like it’s not even there.
Tanks are absurdly tough. A Tank may burn Edge to become virtually invulnerable to all harm. When an enemy attacks from an adjacent tile they must target you: roll Edge for every incoming attack. If you roll a Drain, take the attack damage as normal, but don't lose additional Edge.
Wireds are absurdly fast. A Wired may burn an Edge point to immediately get a standard action, disregarding all Initiative effects and challenges, acting before anyone else (even would-be ambushers).
Muses are absurdly smart. You may burn an Edge point to solve any mystery, or produce any answer, even when it involves improbable leaps of logic.
Denying Feats
It is the GM’s right to say, sorry, you can’t punch the moon to bits, sorry, you can’t survive a nuclear warhead to the face, sorry, you can’t invent a time machine with a potato and a twist of copper wire. If the GM denies your Feat, you gain an Edge point instead of burning one, but you still can’t attempt another Feat until the next encounter.
One thing that glares at me like a small sun is that the entire system was predicated on a GM saying "no" to Feats during the rare high-threat scenarios that, surely, you'd most want to use them in. Granted they serve as an opportunity to generate Edge instead, but there's something a bit odd about rewarding a player with a resource that you've literally just decreed cannot be fully utilised in this scenario.
I presumably trusted myself not to abuse the Feat veto but generally I feel that's a cop-out in any form of guide book and the rules should more explicitly protect a player's options. Yes the reality is that any GM, anywhere, can ignore the rules whenever they so wish but if they do follow them to the letter it might help to not be actively introducing concepts to a player and then slapping their hand away when they reach for the dice a second later.
Off the top of my head, perhaps boss encounters should sacrifice Edge like-for-like (dull), or get to partially counter Feats so on that occasion the cyborg PCs are merely cool and strong instead of super cool and super strong.
Hostile mech that takes half damage from all sources... unless a Bruiser punches it hard enough, ending that effect permanently.
A telepath who browses minds as she's flipping through pages, digging up humiliating memories to apply both universal debuffs and unnecessarily savage running commentary, until the party's Muse taps into the infranet and threatens to share the psion's attempts at covering You Can't Hide Your Heart (You Know This Is Just The Start). She was 41 at the time
I think my biggest regret there was ignoring the gaping hole in the narrative Feat-denial would force through. At the very least it needs to be acknowledged by the text with some damage control: at bare minimum, if you're going to do something like that, let the players dictate the nature of the Feat failing.
Maybe they retcon it, state that they never tried in the first place. Or maybe their punch does nothing and the party feels the rising dread as this new opponent no-sells a blow from their heaviest hitter. Or the opposite happens and the Bruiser is delighted to have a sparring partner who won't turn to red mist with the gentlest of prods.
Also you should totally say yes to blowing up the moon and making time machines. Live a little. My past self is a jerk and, should I find a potato and a twist of copper wire, he'll hear it