Well, you're half-right but I assure you there's more use-cases than that
The problem with this is that in K1 you can't add feats through scripts. They added that functionality in TSL. So you can have a computer console swap out hides for the player to give them different bonuses, but it can't be framed as a feat. Consider using a key item or journal entry instead to track which specialisation is active.
The other three boxes are for natural weapons. Claws and bites and such for monsters.
Wrong section, this section is mostly for automatically generated posts that come from mods that are published in the downloads section.
Try https://deadlystream.com/forum/23-general-kotortsl-modding for modding issues.
That aside, I have no idea what a 999.mod would be, where is that from?
Man, cant believe its been two years already.
Ah well, continuing to hope that we'll see a release.
Do you have any more information or previews on the mod's scope/content you can share?