Inojin's underdevloped due to bad writing. He has insane potential mind transfer/sharing into ink creatures and directing them to do your bidding using them to attack your opponwnts while you engage them. You could do anything from blind to bind (if add fuinn jutsu into them) while your fighting with kenjutsu or using other skills. We mustn't forget this is Boruto's story Dattebasa his own team mates stand around doing nothing but cheerleading. You shouldn't except much more from Ino, Shika and Cho.
