I mean, healing aside, drinking a potion as a bonus action lets you;I have recently shifted to having potions being drinkable on a bonus action. Gives PCs more options with their bonus action and I hoping that it will help encourage the use of potions in general.
"dramatically pull out the potion of giant growth*, throw down the flask and charge into battle"
It brings potions into play more often. WE like it.
*substitute any example you like