I see.
Clones & pets are good on paper. But riot never managed to do a good job with them. Kindred's wolf really teased me until we got gameplay videos.
Shaco's clone & LB's clone (pre revert) are not really a "gameplay extension". Only a movable character without special skills, only AAs.
Neeko's clone is a bit better, but shows how frustrating it is to play against.
Regarding volibear, he's not a "now juggernaut"
Taking a look at last riot post, he was already considered as one. https://na.leagueoflegends.com/en/news/game-updates/gameplay/taking-another-look-subclasses
Even on the universe page he's a fighter (superclass of juggernaut)
https://universe.leagueoflegends.com/en_US/champion/volibear/
So they're looking changes that go well with the champion.
The lore says
"The thunderous demigod known as the Thousand-Pierced Bear is the battle-spirit of the Freljord."
Then i wouldn't understand a "supporting kit" on hit.
Considering the anti-mobility : Reworks and new champs try to remove point&click CC. Making them a skillshot that can be dodged, adding a cast time so people could react.
Actual Q E dont let much counterplay...
Leak isn't enough to judge already. We'll need to see some gameplay of his new kit.