Using the Open Modding Platform by witcher112 we are now able to add brand new characters to the game instead of replacing old ones!
And this mod does exactly that, using OMP this mod adds some of the more interesting and complete unplayable characters that are stored withing the game and adds them to the character roster with the correct names and with custom descriptions.
Characters included:
-Anakin Force Ghost
-Darth Sidius Unscarred
-Dooku Shirtless
-Finn with Lightsaber
-Haindmaiden Bearded
-Handmaiden Beard
-Custom Robot
-Luke with Blasterhelmet (Unfinished animations)
-Snoke Disco
-Stormtrooper Hottub
-Stormtrooper Workout
-Sith Acolytes (3 Variations, not very playable but very cool)
-Padmé Bride
-Padme Nightgown
-Padme Pregnant velvet
-Protocol Droid Black
-Protocol Droid Red
-Protocol Droid Red Chef

Not many people have gotten this mod to work for them quite yet but until OMP gets updated you might need to give your game extracted for this to work or it might just not work at all for the moment. If you still want to try follow the instructions below:

How to download this mod?
Download OMP (download lswtss-omp-bundle.zip and unpack it in game's root directory, test-character-pack.zip goes under mods so file mods/test-character-pack/mod.json is present)
After that is done put the Unused Unplayable Pack in the mods folder located in the games root folder (create one if you do not have one) and extract the mod into there.
Then your mod should be ready to be used in game! Have fun!