Honestly? And, I mean this completely without insult, but, if they came out with that, it would never see my table. The whole "spell points" thing is a non-starter right from the get go. Plus the whole "psionics are different, for no real reason that just to be different" completely turns me off. EVERY other caster uses spells the same way - VSM. Why should psionics be any different? If clerics have to carry a holy symbol to cast their spells, there's no reason that a psionicist doesn't have to carry some sort of gew gaw that focuses their powers.
Insisting that psionics HAS to mirror earlier editions is a non-starter for me. No other class does, so, why should psionics be any different?
To me, the UA captures a psionicist perfectly well.
And, as a side note, what new mechanics does the artificer have that doesn't appear in another class?