I've kinda brainstormed some ideas for character feats. I figure they'd be best used in the Specialist Variant to give each character a once per game ability they can use at the cost of one of their specific items. I'm not sure how balanced they are, but here they are:
Gabriel Correa Santiago: Hidden Cache: Once per game, when playing his Remote Drone item card, he can instead chose to resolve the Interface action on a room that has already discarded its interface token from prior use. The Remote Drone is then discarded.
Hugo Cash: False Alarm: Once per game, when resolving his Call for Backup card, he may choose to instead skip his Security Phase and simply increase the Alarm dial by 1.
John “Animal” McEvoy: Hard Body: Once per game, when resolving his Diesel card, if wounded, he may instead choose to flip his Operative card back to its healthy side.
“Marilyn” 7Y3T9D: Reckless Motorist: Once per game, when playing her Qianju PT item card, she can instead move forward up to 3 rooms and increase the alarm dial by however many rooms she advanced.
Monica Singh: By Any Means Necessary: Once per game, when an NPC is placed in a room as the result of a room being revealed, she may immediately discard her Flechette Pistol to return that NPC to the box.
Mr. White: Red Tape and Front Door Security: Once per game, during a player's Security Phase, even his own, he may choose to discard his Secretaries item card and instead decrease the proximity dial by the result shown.
I've not had a chance to test these though. Feedback would be wonderful!