Originally, I built the load-path with site-lisp paths first, then
packages. There was a modest ~10% startup boost doing this, because
there were considerably more site packages loaded at startup than
plugins.
However, this meant built-in packages would get precedence over plugins,
which is undesirable. In org's case, I simply modified the load-path
in lang/org/init.el. However, this issue has cropped up again in #340.
Evidently, that 10% boost may not be worth the risk it imposes, so I've
rearranged the load-path with packages first.
2b98e550e8