Anyway, how close is Perlmonks to Everything?

Im not really sure. I've heard not so much, and ive heard a lot. I think it depends which bits you mean. PM has had a lot of tinkering done to it by a whole host of folks, so Id guess its reasonably different.

Shouldn't such a modification/improvement be integrated directly to Everything as a contribution?

Probably I suppose. Presuming Everything uses $VARS in the same way PM does (probably a safe guess) then this particular work would probably be generalizable for Everything. I really hadnt thought about it.