While I am not the expert on this sort of stuff I do know a little bit about those droids.
Those droids where the two original mining droid models, to my knowledge they were seen in promotional screenshots similar to Sleheyron. The first set of mining droids that look like a spider could hold actual weapons such as an actual mining blaster, this to me makes sense as in the start of Peragus you pick up a mining blaster off a mining droid though as the final version of the mining droid had inbuilt blasters picking up that blaster didn't make much sense. The second droid that stands on two legs according to the screenshots used the mining blaster rifles unlike what this new mod shows in its screenshots.
Those droids where textured so I could make my own mod using the vanilla textures so it feels more like a restoration but there is one major problem. The first mining droids when I tested it couldn't fire their weapons for a mysterious reason, they held their blasters and did the firing animation but they couldn't shoot anything (I changed the mining droids utc to the unused appearance and not change the mining droid model to the old one as this modder has done if that means anything) and the second mining droids have barely any animations, I think they can walk and do a deactivated pose but that's it. It has no attack animations whatsoever.
If someone could fix those animations then this mod could be done.
Fun fact: The second mining droids did appear in M4-78EP as deactivated Sith War Droids Mark 4's in line in the industrial zone.