I suggest you rewatch. caves essentially deals with the subject matter of hard drigs vengeance on varos was before its time dealing with (amongst other things) reality tv. A planet that sells torture and executions on sat teatime tele...ghost light was one of the best scripts ever written.
Wrong. Suggest you watch caves of androzani (davison), possibly frontios as well. Vemgeance on varos (baker) , resurrection of the daleks (baker), curse of fenric and ghost light with rememberance of the daleks (mccoy) and then say that.
Nope. Science FICTION.
Also the sixth dr obviously liked commander maxil so much in arc of infinity (dr 5) that he took the likeness of colin baker and romana no2 took likeness of a lalla ward character in armageddon factor.