I'm glad you like it!
At one point I was planning to do this with just the Tanis and Czerka Protocol Officer's heads under the mod name "Unusued Commoner Restoration mod", but at the last minute I remembered I had the female dirty commoner head variant (whose texture is only from the Nintendo Switch version of Kotor) so I decided to restore the male and female version of that and I also chose to restore the Sith Apprentice head for the sake of it.
I was also considering an optional install for those who didn't want the Tanis/Czerka Protocol Officer replacement where I add those two cut heads as a sort of 4th Asian Commoner variant which would replace random generic NPCs.
Since this has been requested I might, at some point, add individual head installations as an alternative install. Anyone who's following this mod via the "Follow" button on the top of this mod page should receive a notification whenever I update this mod!
She doesn't have a unique head... but you're onto something.
In the game files exists four different appearances:
"Tatooine_Comm_Asian_Male"
"Tatooine_Comm_Asian_Female"
"Tatooine_Comm_White_Male"
"Tatooine_Comm_White_Female"
The Asian Male head is used by the vanilla Tanis Venn, Dorak Quin and one of Mekel's starving hopefuls. The White Male Head is used by Kono Nolin and the human GenoHaradan Assassin with Hulas. White Female Head is used by the Tatooine Begger and Tanis' wife.
This leaves the Asian Female head being used by only the Czerka Protocol Officer, her head is still considered a generic head though being a modder I simply saw her head as being labelled 'generic' and thought it was used somewhere, didn't realize others would've believed her head was unique.
Dia probably won't make the cut for two reasons:
1) This is a psuedo-restoration mod, whilst not K1R or K1CP worthy content it still technically restored a piece of 'cut material', therefore with this sort of mod I try to ensure that the mod will fit with the vanilla game (It's why I downsized the dirty female commoner head from 1K to 256x256 resolution here). Dia is part of a series of similar side quests who all don't have unique appearances: Largo, Matrik, Selven and Bendak Starkiller all use either generic or other default appearances so having Dia use a unique head would be odd... if I follow my own restored content rule.
You could argue Deadeye Duncan has his own unique head when the other duelists don't... but do keep in mind that he was intended to appear on Manaan for a random event making him a tad more special than the other duelists.
2) Well, why don't I include a Dia head as an optional installation? Because Dark Hope released this mod, whilst that mod only changes the 1st asian female commoner head variant and the green female clothing texture this mod was intended to be used by Dia... so by having this head replace Dia's head it sort of ruins what Dark Hope was going for with her mod.
Ada probably isn't going to happen because I find her role is too unimportant as a character and her role in the game is very quick with either her running away or being killed.
Kaeira, on the other hand, is an excellent suggestion! Using my previously mentioned rule for restored content, a unique Kaeira head would fit right in with Zaedra's and Gadon Thek's unqiue heads!