Not specifically regarding Psionics, but the idea in general...
Years back, my crew and I converted Darksun to Role Master.
Things shifted in a few interesting ways.
While TSR had Stone/toothed swords doing LESS damage (They lost a die, IIRC), when converted to RM, suddenly toothed swords became tebujes, doing Rip/Tear crits (Ugly!), Obsidian weapons did increased bleed (+1hp/rnd,house rule), etc... Light/no armor wasn't as sucky as it would be in D&D, since one could Parry, and Armor isn't all in ICE games. Just a thought or two for you to consider.
Oh, and my Thri-Kreen Druid retired at Lvl 2, having succeeded in brokering a soil for water deal between the halflings on the jungle, dwarfs of the volcanic mtns... I had taken Aqueduct Engineering, and became quite rich, raising grapes/making wine...Ah,memories.
Anyways, good luck with your game!
-Uriel