As far as I can tell, the feats in this mod
are still mere placeholders that technically don't do anything. So you couldn't, for example, create a new Flurry feat because it wouldn't show up in the combat selection. And you can't edit what Flurry does at all because that's hard coded.
Also, KOTOR's scripting language is closer to C#.
As far as non-feat force forms go, I can think if a couple ways that aren't utilized by any mods I know of. It is possible to add permanent effects and then remove those effects with a script, so to create a Force power to do such would be trivial. It's also possible to equip items to a character that are hidden - this is how HK's upgrades function - and theoretically you should be able to destroy them as well. So with both it would be possible to do something along the lines of the armbands without the armbands, and without any time limit. And to keep anyone from cheating by using two. I considered doing so at one point, but I've been too busy.