My preference would be for a psionics system that used that as a core idea. The closest was 2e, where psionicists started out with a single discipline (telepathy, clairsentience, psychoportation, psychokinesis, or psychometabolism – I don't recall if you could take metapsionics as a primary discipline, but it would likely not have been a good idea even if you could). Even then you could branch out, but one discipline would always be primary.
Now, 2e psionics were far from perfect. The telepathy powers were too punishing for non-psionics, and the system was mostly too flat (1st level psychoporters could have, and probably would have, Teleport as a power – far shorter range than the spell, but still). But deep down, it's what I think of as being "right" for D&D psionics. Perhaps because that's where I started, but also because of this approach of powers being different expressions of a core discipline.