Volibear's Small Quality of Life Buffs (suggestions)

Alright. Volibear has been out of the limelight for quite some time now. Currently, on na.op.gg, he is ranked 41 for the Top position, and is non-existant in the Jungle position. He has a basic kit that can prove to be pretty effective against select champions, but when it comes to facing tank shredders and even other tanks, I feel like Volibear suffers heavily. Below are a few changes that I feel like suggesting, given they had been made possible for other champions through updates or reworks.

Passive - Chosen of the Storm Solid.

Q - Rolling Thunder Perfect in my opinion. Maybe give it a little more speed towards enemies, but nothing too big.

W - Frenzy Similarly to Jax's passive and Ashes Q, instead of dropping all of the stacks at once, would it be possible to drop 1 at a time? I dare even propose give it the chance to scale higher with more hits, maxing at 5. Allow it to "bite" on 3 but do more on 5. Reducing the attack speed gained would be necessary.

E - Majestic Roar The last change to this ability, giving it the brief knockup, was perfect. 0 complaints.

R - Thunder Claws There are a few champions that get resets or extensions of ultimates after they receive an assist/kill ( ). Should Volibear be any different? Its not that I think he needs his thunder paws to last a whole minute, but it feels like my ultimate runs out half way through the fight. After all, Volibear is pretty awesome for initiating with a flash-flip. 12 seconds isn't long enough to turn away from the enemy squishies and focus on the bruisers that remain standing after killing your back line. Perhaps a 5-7 second extension per kill/assist.

There may be other champions that need harder reworks, but I feel like these are relatively simple changes that could bring Volibear into this relentless meta. Please critique any of the suggestions if you feel they are too strong or too weak.