Hello.

I have another proposal that was not considered so far.

The main problem we're trying to solve here is when a new user calls 
something from package.el without having it initialized first. We also 
want the solution to touch only that group of users and no one else.

So I propose, we don't do anything until user either:

1. Requires something that's not available.

2. Calls a function that's not available.

In either of those cases we check whether (package-initialize) was 
already called. And, if not, we give user an interactive window along 
the lines of:

    /"//You tried to call X which is not available and Emacs package
    manager was not initialized. Press: //
    /

    /i to initialize and try again/

    /w to initialize, try again and don't ask again/

    /x to dismiss/

    /K to dissmiss and never ask again."/

w writes (package-initialize) to init)

K would set variable 
dear-emacs-i-totally-don-t-need-any-begginers-advice-thanks to t.

We also don't show this window when kill-package-el-and-burn-its-body is t.

I'm not entirely sure on the technical side of catching requires and 
void-functions, but this seems to be the best solution when all other 
things are considered.

Also similar approach is already used in Emacs, there's some key binding 
that's disabled until you confirm it in a similar way, sorry at the 
moment I don't remember which one.

-- 
Best Regards,
Nikolay Kudryavtsev