I'm very grateful that Eberron is back! Keith Baker's work is always imaginative, consistent, and cool. As far as I'm concerned, I don't need additional rules on psionics... I'll just take the magic rules and change the descriptors. (Those of you who love Savage Worlds know how powerful this approach is.)
By that logic, you could easily convert the Bard, Sorcerer, Warlock, or even Wizard and then add another "school," "patron," or "origin". Call them "psi-warrior" or "mental guardian". Use monks, but describe their chi powers as psi powers? The eldritch knight and arcane trickster sub-classes also fit easily into this approach.
After all, Vicious Mockery, Dissonant Whispers, and a host of other spells already exist. In my new Eberron campaign, the spell Flaming Sphere will also be called "Rolling Pyrokinesis".
To paraphrase Greywulf (an old-school gaming genius), D&D 5e is an "effect-based" system that can elegantly incorporate description to provide uniqueness. The artificer class is all about creativity and unique specialties. If it doesn't break the game, why worry?
A lot of us worry a lot about "official" rules and content. Yet the PHB and DMG encourage the utilization of house rules. Let's play some games and have some fun, eh?
FYI: The new Eberron book is amazing. In my humble opinion, it's the best book EVAR.
- Dr. Bull