What if Baron gave less gold and shorter duration BUT gave a heal and mana restore to champs in pit?
By "heal and mana restore" I'm talking something on the order of a Soraka ult and a cast of Clarity.
This would incentivize riskier Baron takes/steals as well as riskier positioning around the objective: teams that secure the objective would get rewarded for being in the more committed and vulnerable positioning inside the pit.
Imagine a team is down 10 kills and 5k gold while the enemy team is attempting Baron. They all blast cone into the pit for a team-wide steal, get the heal and mana restore and immediately initiate a team fight now in their favor thanks to the Baron secure.
At the same time, lucky Baron steals by a safe nidalee spear or something (while still extremely valuable) aren't rewarded quite as much since less global gold is given and the buff doesn't last as long.
I think this change would keep the current power of the Baron roughly the same while opening up a new set of Hail Mary options that would be exciting to play and watch.