I can just tell you all play on mouse and keyboard to be praising Shukuchi... /s
that aside, I do think gap closers should not, generally, have potencies attached to them. A good example of this, I think, is pre-EW Warrior. It had a potency and you could use it for damage if you wanted to/could, but instead of having charges, it cost gauge and you likely would have something better to use gauge on instead of that if you needed damage, while also not costing so much gauge that you'd have the risk of not having it available if you needed to gap close. Charges are... fine, they're not horrible, you can always just save one to gap close and the rest for damage, but I don't feel like it's the best option available. That's, obviously, Elusive Jump. The best skill in the game. 0% chance of throwing yourself off an edge!
