There would be a big difference between Stone featuring a movie for which he wrote the screenplay (where oliver Stone is a legend and part of pop culture), and Tarantino later writing a movie based off of fictitious title mentioned in an earlier screenplay. Stone (though I do love NBK and the Doors), is just kindof tooting his own horn, Quentin is creating his own little world.
In fact doing something like that actually reminds me of what many authors have done. Vonnegut, and Stephen King do it. Stephen KIng’s works are all connected by the Dark Tower series, within one of the worlds the movie the Shining is referenced, Stephen KIng is an author in it.
I just think it would be cool, not self absorbed.
