Some ideas you and the modder might include in your mod.
Seyugi Dervish would be an good idea for a force sect to incorpate the dark side, unarmed and stealth.
I do think A sidequest to make your companions Seyugi Dervish force adepts that are loyal to you. For Master Manipulator Revan(regardless of alignment), allying with Seyugi Dervish would be a good idea in the sense that Seyugi Dervish are compentant assassins. In Kotor game tradition, there is a Light and dark sided ending for them. Either way, Master Manipulator Revan gains a powerful ally in them.