Here are some ideas I had floating around: (Disclaimer: Not all of theses are meant to be paired together. Also, some of these may have come up in past posts.)
Support: (Cloak + Weapon)
Utility Recharge Beam - Beam would decrease the cooldown time for primary abilities on characters. It would not work while that ability is currently active. (e.g. You could not recharge Assaults personal shield while it was active.)
Cloak Drone - This would work like Slim’s “bug” but it would have a timer. (20 -25 seconds?) If a character took damage the drone would release and make the character visible again.
Medic: (Heal Burst + Weapon)
Orbital Heal - This would have a larger spread than Hank’s barrage but a smaller spread than Cabot’s dust. It would do significant healing but also have a cooldown similar to Hank’s orbital.
Stackable Healing Burst - Healing Burst would stack and be the only measure of healing. (2x or 3x depending on balance) Same cooldown/recharge speed as normal.
Necro-heal - Passive regeneration and the ability to give your health to another player. (Regeneration would not stack with buff or perk)
Trapper: (Dome + Weapon)
Thermal Signature Device - This would show all wildlife and the monster, within a given distance. (Like the animal sense buff) It would detect faint footprints or the Monster’s pheromones at further distances.
Bouncing Bear Trap - Since this Trapper wouldn’t have the best locating method, his CC would be more powerful. You could place 5 on the map, same arm time as Maggie’s harpoons, but would take 2 basic attacks to disable once triggered. They would have to spring into the air, because…you know…Krakens.