I've never modded KOTOR, so bear with me.
Here's what I want to do:
I want to change HK-47's class, attributes, and feats as well as feat progression. I'm working on the details now, but the gist of it is that HK is an assassin droid, and as such he should have stealth and melee capabilities, and I think he should (possibly) be able to wield lightsabers owing to his origins (think General Grievous.) With that in mind he should be similar to a Scout - good with skills, better feat progression than Scoundrel but not as overpowered as a perfect Soldier. Maybe even grant him Sneak Attack tree - he is, after all, an assassin droid.
I don't want to change his class though - or at least, his class name. Can I make a custom class with its own feats (basically Combat Droid but with Melee proficiency tree) and then set HK's class to that custom class?
What tool do I need to do this? I can work with a GUI tool, but anything involving scripting, assembly, or coding is off the table.
Where are the tutorials? I've tried googling but all I get are tutorials for tools with dead links and downloads.