The key to making Young Pyromancer good isn't getting some minor additional value out of your spells but exploiting the tokens - Opposition, Attrition/Grave Pact, Dark Prophecy/Fecundity, equipment, Purphoros, Dread Return, Windbrisk Heights, whatever.
If you are going to mess around with it by playing a bunch of spells, it has to be more effectual than just Gitaxian Probe; something like Prey's Vengeance as a two-shot combat trick + way of forcing through damage that also happens to give you two tokens.
Also most of the people who want to do 'fair' things with it disavow not just Storm but cards under that general umbrella - stuff like Snap or Frantic Search - and as a result you're just playing a worse fair game than people with a normal plan.