Hi RAZD,
Then you have watered kin selection down to common ancestry,
an already adequate explanation for the transmission of genes from parents to offspring where there is no action taken by, or any different behavior of, any of the carriers to enhance the survival or breeding of their kin other than surviving and breeding.
With this definition of kin selection there is no point in saying kin selection is a mechanism.
No.
Standard selection applies because an organism with an adaptive features produces more offspring that those without; kin selection applies not to the organism itself, or its direct descendents, but to other carriers of the gene.
Do you see the distinction?
It is only when the proportion of foul-tasting bugs within the population increases to the point where the predator associates the foul taste with enough members of the population that they are reluctant to attack the bugs that selection begins to take effect.
Genetic drift gets you to that point. Kin selection doesn't, nor does kin selection explain that point all members of the population benefit at that point, fellow foul-tasting kin or not.
But we didn't suggest that kin selection gets you to that point, either. How are you explaining how it gets from there to a trait common to the population if not kin selection?