Volibear has a lot of themes now and they all need to be used
I don't know if this belongs in Game or Story but since it about his future kit I think game
Volibear has a handful of different themes now. Storm deity, war god, and the Ursine that he leads. All 3 themes need to manifest into his kit. Give us a little bit of everything. I think they could mix well even on the same ability slot. You wouldn't even need to change the kit drastically and I think he has cool abilities that just need to play up their cool factor + get a new value.
Like I had an idea where his R could be him summoning a big ass storm cloud onto the map and some Ursine guys show up in the middle of the chaos and it's like he just created his own lightning battlefield. That Would be sick. It would be even cooler if the storm was a roam style ultimate if used out of combat and he rolled up on a fight with his crew and forced a fight to happen.
No projectiles though. Skillshots are for weebs and lightning bolts are overdone. Give him some neat conditions like Darius or whatever but he should stay mostly AA based for his damage and his spells should be about enabling that + giving him some team value besides his AA.
and he should be a hard carry. None of this "I'm a God of bat I suck at fighting after laning is over." That's what Pantheon is for. Give me that end game fantasy since you turned Nasus into a mid game fighter and juggernauts don't have a late game pick anymore.