Bouncy Grenades with reduced trigger time? Eh, could work, considering that one of the methods I used to get Chloe to try and hit any of them is to lob grenade at a wall and let it bounce off into the chasing hoard. Reduced Trigger time means it can actually explode and take out the hoard for once after a Trick Bounce.
And I like the idea of skills for our officer... Especially since you made the implication that the skills and perks would allow us to give our chosen characters a personality we like.