It certainly wasn't their due to their singing prowess.
Okay, I don't have a large opinion either way wrt hoods (and masks); if it doesn't affect role-play then it's just cosmetic, and is a simple skin update (like many modders have already done, and in fact as Revan was clothed in K1). So it is a quick, cheap win.
I'd be surprised if the devs of any future KotOR game, if there is to be one, wouldn't add this cosmetic flourish, simply because it would make so many little boys happy for no effort.
Then again, maybe the devs would make the mistake of thinking that, because it is so easy, they might leave it till the last moment to add, and then run out of time in the dev cycle to actually put it in ... "
I'm sure you could die on Peragus II, if you let the Sith in, and then died fighting them. (I used to let them all in, because you don't get any XP for killing them with the turret. Still, you'd have to be a bit of a gimp to die killing them, but it must be possible.)