Jobe00:
Most supers RPGs have a similar mechanic. In Mutants & Masterminds, you have to spend a Hero Point to do a Power Stunt. In the OG Marvel RPG, you had to make a FEAT roll which usually required Karma to succeed at.
In the original Marvel Super Heroes, the
first time you attempted a Power Stunt, the requirements worked as you described. If successful, each subsequent attempt to perform the stunt got easier, until after a certain number of successful implementations, it
became part of the Hero's repertoire.
This isn't being treated the same way. You aren't investing in a long-term development, rather you're presumably doing a "one-off" implementation that you'll never try again, or keep pumping Bennies into to duplicate.
These are design/development views that vary immensely. But as a rule, Savage Worlds is mostly punitive. Edges and Advances buy off/counter penalties as opposed to giving bonuses.