One less noble aspect of the Warden philosophy came to mind when I was reading about Clan Coyote's history. When the issue first became important enough to merit Grand Council debate, the Coyotes were a (if not the) preeminent Clan in terms of territory and might. Then there is their conservative bent in social terms.
Reading between the lines, the Coyotes' motives for championing the Warden cause seem less like altruistic care for the Spheroids and more about preserving the status quo in Clan Space where they would remain top dog (pun intended). Given that their Wolf ally was co-dominant at the same time, this may have been a factor for the Wolves as well.
An invasion of the Inner Sphere would have upset that and given previously weaker Clans the resources to challenge Coyote supremacy - though as it turned out, the Crusaders managed to erode that anyway within half a century. One could claim that had the Coyotes instead tilted the balance towards the Crusaders in 3000 they might have had a decent shot at becoming ilClan.