One thing that Citadel has never really done very well in 40k is to create alien modelss. Forget about the extensive list of aliens described in Rogue Trader. When you actually get down to looking at the models produced, up until around 1990, 40k aliens comprised of space elves (Eldar), space dwarfs (squats), space ogres (ogryns), space halflings (ratlings), space zoats (um, space zoats), space slann (er, space slann) and space orcs (orks). With very little imagination, GW had simply ported all of its fantasy races into the new setting; perhaps leading to references to 40k as a science fantasy rather than a science fiction game.
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| Look - Elf,Dwarf, Goblin, Orc...er, giant alien fishman... |
Genestealer cults provided the first inkling that there might be actual aliens inhabiting the 40k universe, and the Tyranids are as alien a race as you can think of. We went back to fantasy archetypes however, with the space undead (Necrons), and it’s only latterly that the blue-skinned, Manga inspired Tau have provided anything much different.