Anti-Slime Setting for Superflat

A setting that disables slimes in specific superflat worlds would be great. Currently in my worlds, I have to turn the game on peaceful, but superflat often is a testing world that can sometimes use hostile mobs. I propose adding a setting for superflat worlds that are anti-slime but only for creative worlds, that way the challenge of survival on superflat with slimes and slime farms on them would be unchanged, but the setting is toggleable on the world creation menu, benefiting most people who use superflat for testing or survival!