Li Shenron
Legend
The downside though is that you need to figure out how to make "warrior" psychics, "rogue-like" psychics, "monk-like" psychics, "mage-like" psions and so forth, all using a single class as a foundation.
Why does psionics need to do all those? Magic (spells) does already do a little bit of everything, and yet we didn't really need to have an Eldritch Knight and Arcane Trickster, granted we got them in the PHB, but multiclassing would have sufficed. Why can't multiclassing also be enough for psionics?