While I'm waiting for my Windows Support Drivers to download on my Mac, I figured I'd address these issues here for once and for all, so we can have a clear answer.
Not feats like "Critical strike" or "Power Attack", or any feats that allow you to use different scores in combat (Melee Finesse, for instance, wouldn't work).
You can, however, create feats that work exactly like Force Powers (Wookiee Rage) and any feats that give the player one time bonuses (Gear Head).
And this is all done through editing the main K_ai_master script. Just add a few conditionals to check if the character has the feat, and then add the bonus. Might have to include some globals too, because otherwise you're going to have a perpetually expanding bonus.
To sum it up, possible, but impractical.
Yes, you would need to separate their heads from their bodies. I've done it, Bob Ta'ar was working on a mod where he was taking alien heads and putting them on the main armor bodies to make playable alien PCs.
In the case of Malak and Yoda though, their heads would look pretty weird on those particular bodies, so you would have to either create the separate body and fix the bones/weights, or... well, you would still have the bodies, just they would be stuck with the same animations.
Theoretically, yes. The trouble comes from weighting the skin, which is hellishly terrible.
Yes, but you lose some certain details like the ability to use area lights. You can add lightmaps to the area, but there is no lighting that affects the characters, which makes it look weird at best.
Yeah, just about as well as you could splice any audio file.
As much as your computer can hold, I guess.
Maybe... with only 20 levels to work with. You can change which feats/powers/skills are given to you at which levels, but there is always that issue of saturation..
Khrizby might have made a mod... I know there's the melee HK and the Darth Nihilus with the animations....
Either make a helmet model big enough to cover the entire head (looks ridiculous sometimes), or you could create a separate helmet head, and create an item that has a disguise property that refers to an appearance.2da line with that new head.
I've been playing around with it. Theoretically, it is possible, but there's still that tedious task of actually modeling something with a cape.
Yep, sounds possible.
You want to animate all of those? Have fun. You would probably have better luck rigging them to work with the animation dummies that the main character uses.
Switching back and forth between multiple characters within the same module (without reloading) seems to have some funky effects.
No one usually, because where would we get even halfway decent voice over to compliment that?
Yes, it's called Area Fog. Every module has it, it's just more apparent in some than others.
Other than that, I think JCarter and I should have a chat about modeling. Bring him up to speed on what is theoretically possible.