> If I sent patches (once we're on git, how goes that?) for customize any
> hooks that aren't already customizable, they would get accepted?

I'd like to point out that saving a hook with the customize interface is
kind of asking for trouble.

Hooks are routinely added by arbitrary packages. If an unsuspecting user
customizes and saves a hook through the customize interface, any functions
that other packages have added to it will be saved as well.
If the user later removes one of these packages, he'll be confronted with
"undefined function" errors which no amount of restarting will solve.

The safe (and annoying) way to do this would be to define a second hook for
the user, and make that a defcustom.

Malabarba