40k achieves contrast in plenty of ways, without trying to codify it in a race. Within the Imperium, moments of contrast are set up by real human interaction, and appreciation of life in universe of death, beauty amidst destruction, hope amidst defeat.
The Tau are basically a sledgehammer of contrast with no real underpinning other than "we need something different." They're there specifically to appease people who don't like the Imperium, but don't want to play or identify with any of the other races the setting offers. And they seriously bring zero to the table. They're a minor threat to the status quo on the edge of Imperial space, whose guiding idea is "slowly assimilate people through reason and rationality and only fight when it can't be avoided or when the plot forces a Tau to act other than a Tau." Boooooooooooooooorrrrrrrrrr-ing! At least the Eldar have a deep mythic history, a unique perspective on existence, a constant struggle for survival. The Necrons embody that which is grimdark, the soulless death march toward oblivion for all sentient beings. (To be fair, they're space undead but no one is going to disagree that undead are both rad and grim dark.) Every faction's motivations are clearly defined without needing to read a Codex, except for the Tau.
They don't fit 40k to me in the sense they have none of the problems or racial motivations of any of the other factions. (Except 1) Tyranids and 2) winning.) They are a feckless option thrown out there to try and capture a couple more players, "neutrals" who like the setting but seem to think someone in 40k needs some kind of moral high ground. No one is a good guy in 40k. No one has the moral high ground. And if someone is or does.....they'd need to be a hell of a lot more interesting than the Tau. This is what the Tau remind me of.
Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz.
I mean, if we're talking about dull, I find the Imperium itself dull.
And I find it takes its theme of dehumanizing Imperial Citizens and wrecking their worlds and their lives, and still manages to create interesting societies, ecosystems, political systems and cultures within the overarching culture to keep it interesting. It still manages to capture what sci-fi is about: alien worlds and undiscovered ways of being, while still keeping it under the umbrella of the Imperium and grimdark.
But comparing the massive amount of lore the Imperium has to the Tau who are by nature the new kids on the block, well...if you go by 'how much good lore do they have' when the Imperium or Chaos are the focus of just about literally every book in the Black Library, well...
It's a fair point. But if Tau were actually
liked, by a larger amount of players or GWS staff or writers....don't you think they'd go where the money is? Maybe it's the fact most people find them so terminally dull they
don't care to learn or see any more about them. And again, this has a lot to do with the racial theme which is "passive aggression" and that from the outset, GWS basically said "Yeah they're here too, but they're not really doing anything." Prep for another aborted campaign? Probably. But at least the stasis point for other races is left somewhere interesting, with some visible conflict pending. The Tau are sending delegations with their free time......still my beating heart, for dat action is too hot to handle.
Let me put it this way. The Tau would be
perfect for Star Trek. But they're completely out of step with 40k.
Also who honestly gives a shit if the Tau are 'weeaboo' anyway.
I wouldn't give a shit if they were done in an interesting way. They're not. Whatever RL inspiration the Imperium is drawn from, it's taken and developed and the themes behind them are timeless and cherished. (Warrior culture, heroism, self-sacrifice, bloodthirst, being crushed by authoritarian might, struggling against insurmountable odds and so on and so forth.) The Tau don't embody ideals and cool themes and do something with them as much as they borrow from them superficially to match the art they've conceived of.