In an old SWDTeam video hosted by YouTuber02, some planned Dalek variants were shown. One of these was Dalek Alpha, from the comic Children of the Revolution. Alpha was originally seen on TV in The Evil of the Daleks, as one of many humanized Daleks. These were created by the addition of human “factor” (likely DNA) into Daleks. They were childish and nonthreatening.
In the mod, I feel they should be similar. Humanized Daleks could be made by the player, by combining some form of DNA sample with part of a Dalek. The humanized Daleks would be passive (or maybe even tameable). Other Daleks would try to destroy them, as in the episode. Dalek Alpha could be one of a few variants of humanized Dalek.