Potion of Density

Currently ingame, we have the potion of jump boost to increase the jump height of players and mobs as the only use for the rabbit foot. I think it'd make rabbit foots more useful if there was a negative version of this potion: the potion of density. This potion would be created through the use of a fermented spider eye in the brewing recipe for the jump potion. Unlike jump boost 1 and 2 increasing jump height, density 1 and 2 would instead decrease the height a mob or player is able to jump, along with decreasing the speed at which players and mobs are able to swim up and causing players and mobs inflicted with density to fall faster than they normally would. The potions of density would also have much shorter duration time than potions of leaping due to these effects, with the maximum length for density 1 being 1 minute and 30 seconds and 45 seconds for density 2.