Well, strongly recommend away, but pkgsrc was not designed for the people doing bulk builds, but rather for users. Nor should it ever be anything other than for those same users.
If pkgsrc becomes a place where only people with access to large company cloud deployments, or huge bulky machines, are happy, then I think we have a serious problem. Analogous to Linux being taken over by the corporate suits wanting to stress the number of lines of code they contribute. I really don't want to go there.
In much the same way that you seem to insist on PLISTs as being essential tools of pkgsrc itself, and I assert that they are large barriers to anyone anywhere packaging software, and on which we don't agree, I suspect that we'll have to differ until the cows come home.