Every character, ability, and item in the game has been designed and balanced around this form of instantaneous velocity not existing in the game. I don't see a very good argument for keeping it beyond "it feels good to use". It is ugly to look at, moves characters an unreasonably far distance in a very short time, and will become the definitively best way to move your character if kept in the game. Mantle sliding could also be described similarly, but at least the positional displacement created by mantle sliding isn't consistently capable of escaping an unsafe position immediately.
As it stands right now, most every movement spell in the game is less effective than this. Even if a 1-2 stamina cost were implemented it would only be weaker than movement spells due to resource cost. I don't think every hero needs access to instant velocity that's on par with warp stone, for the low low cost of buying a stam item that they already wanted in the first place.