To my knowledge, you have both the bleed synergy abilities covered in your existing team, so a buffer for your bleeds might be a good move. Pretty much any time there's a DoT I like to pull out my Zandalari Raptor, or a Cogblade Raptor with Exposed Wounds, or if you're down on survivability, something with Plagued Blood. If you're looking for just bleeds, a squirrel might be the ticket. Combine the Wood Chipper bleed with an extra DoT in Nut Barrage and that's a lot of extra damage. You'd likely get ripped apart by a team with decent flying, though.