So a 20 minute Baron automatically ends the game
Baron needs a damage buff.
It's so easy to 3-man and you can even 2-man it. You made it such a game-ending objective but didn't significantly buff its damage. It's actually ridiculous how a Banner of Command + baron Canon Minion ends the game now.
You make an objective that is meant to be contested become made out of wet paper. It should be much harder to fight Baron - especially with how it's basically a win now for the team that gets it.