Just thtowing this out here as a hopeful addition,
We all know someone will install a package from the AUR and it will have to be compiled,
My thought is this:
why not have
make automake patch and I believe autoconf
as they are require for selections from the AUR,
I had to install them so I could install for example
aur/xfce4-docklike-plugin
among others.
In every introduction to the AUR it mentions you need prerequisites; packages that will be assumed to be installed and not listed in any PKGBUILD dependencies.