You know, I was REALLY impressed with the Tau Firewarriors sprue. MUCH better than Eldar Guardians as far as posability and options. The even had legs set in a kneeling position, awesome when you slap that rifle in their hands!
Yeah, actually you could probably add another section to the "Why people play Space MArines" thing, which is MYTH (like them being the most customizable).
Even though WHY people play space marines wasn't the topic as I understood it, but the prevelance of Space Marine armies and why that is. Subtle change, but it also includes GW's attitude twards the varius races and the way they pamper SM players.