>>96575527
The ones from the old FFG RPGs seem to be the most popular with anons who are into that sort of thing
>>96575046
I think the IG started out as a way to lure historical war gamers into playing 40k by implying they could use some of their existing models as basic troopers while buying a few new ones for things like tanks and commissars, back in the old days when GW didn't have market dominance and couldn't take as hard a stance on using proxy models.
It is probably why early lore for them focused so much on mixed regiments, particularly mixing tank formations from one world with infantry from another.
>>96575247
It is true that 40k copies ideas from everywhere, but the heavy use of grimderp and anachronisms gives the setting at least a bit of a coherent feel, while the Tau still seem like a bit of an outlier, and thus the faction of choice for people who would rather be playing something else but can't find a group for anything but 40k.
Pretty much the only time the Tau are interesting is when they get contrasted against the more extreme 40k factions. Instead of trying to make them more grimderp, GW should just go all out in the other direction and make them a meme-y group of Star Trek tier idealists whose efforts to interact with other factions with the power of science or diplomacy usually backfire