Did you ever read Psi-Force
I think my next campaign will be a homebrew world with Paranormal Powers as the focus
A party of ESPers with maybe some other classes as support classes (maybe NPCs)
Low magic world where psionics are unknown
The secret society in charge knows that now regular people are emerging with powers
The characters are being hunted while they learn their new powers and help others out where they can
I'm also debating just setting it in Dark Sun too and just homebrewing the adventure
That is -awesome- to hear! And no, I wasn't a Psi-Force fan back when I was younger. Might have to start reading it, though, since it was a separate Marvel universe.
That said: Dark Sun could be a place to set it, sure. But the preponderance of psionics in the setting (particularly the monsters) might be a bit much. If I might make a tiny suggestion?
Victorian England could be a ton of fun. Have the secret society be a bunch of English Nobles who learned what little magic there is battling against similar secret societies in other European and Asiatic countries... That puts the Psionic Awakening both as a power struggle against power sources (Psi/Magic) but also frames it as one of economics (Poor people with power? Don't be absurd!) and social clout/power.
Could even do the "Fantasy England" where there are goblin chimneysweeps and the like!