End Slime and a New Slime-Sliding Enchantment

I suggest adding a new mob called the End Slime to the End dimension. The End Slime would leave a purple slime trail as it moves. Players and other mobs would slip when walking on the slime, and players could remove it with a shovel. When defeated, the End Slime could drop Purple Slime, a new crafting material. Purple Slime could be used to obtain a new boot enchantment called Slime Trail. When wearing these enchanted boots, holding the sneak key (Shift) would make the player slide quickly across the ground, leaving purple slime behind. This would add a fun new way to travel around the End, create traps, and interact with other players and mobs without replacing existing drops or mechanics.