Not only do I love that "classic" weird pseudo-sci feel of 1st thru 4th edition psionics, but in the interest of keeping D&D true to its roots, I would prefer WotC retain that feel. As I feel they've done a good job so far with the 3 core books.
However, I understand that psionics has always been a contentious add-on to the main rules for fans, with a love-or-hate it issue from pretty much the beginning. Each new version of psionics retained that pseudo-sci feel (for me, at least), but varied quite a bit on how it was delivered and always had just as many detractors as supporters (or at least, seemingly to me). And, alas, the pendulum seems to be swinging away from pseudo-sci, both by the designers and the fans overall. I'm not super familiar with Pathfinder psionics covered in their "Occult" series of products, but it looks to be as much of a departure as the Unearthed Arcana playtests we're discussing.
So, yeah, different strokes.
Dreamscarred Press!!! Let's get cracking on 5th Edition Psionics with that pseudo-science feel for the DM's Guild!!! I'll buy it!