If Bard Was Instead a Jungler...

His passive seems like it was made for jungling, and his make a path through walls thing would be good for ganking.

He'd definitely keep his passive and his E. I'm not sure if he'd keep his shrines or if they'd become something better than they are now (have auras for allies).

What he really needs though is either tank and a reliable CC (his Q and R don't cut it) or damage.

He would need an attack damage buff, increased based health, more healing on w, and a shorter cd on q.