Or for giggles add the Squats.
yes, I still have my WD (what... 112 or so?) around here somewhere that had the first 40k army list (of any use) for them, and a box of the epic troops from Adeptus Titanicus - er, Space Marine... Bikes, Trikes, Engineers and Hearthguard in baby termie armour... could be entertaining... Nobody would be expecting it, that's for sure.
I was out of WH40k before Tau/Necrons/Dark Eldar came in, so any of those would be cool, get a chance to see new stuff and try new things...Use your head, don't lose it - Don't feed the trolls!
Use your head, don't lose it - Don't feed the trolls!
Boycott Belligerent Boycotters!