matt horner seems like awesome characther in sc games, and even has its own mini game where you dodge mines with cruiser. ever so he is very suortive to all charachters in sc story.
there fore he could be introduced in heroes of the storm as support player. he would have some aura of giving hero around some armor or move speed, but for that we have lucio already. and his skills would be hyperion aid. like scaning area for invisibles charachters and reveling area. his attack would be with his pistol like diva’s. his ultis would be calling a strafe run from hyperions canons like tychus q when in robot form, are defensive to get heartstoned to nerby fort. maybe his other abilites could also be calling medivac for healing, and calling down mercenaris to help fight minions like azmodan. i think he is overlooked hero.
for skins inidana jones would be nice and han solo i guess.