Extended Theory of Quanta
"No matter how many pieces are strung together and sewn, no picture can be seen despite our divining. Each line of verse rhymes with the last, and as we ran out of words to rhyme, we invented new ones. Now we come up to the last stanza, and instead of inventing one last new word, we sit and shake our heads and wonder what we've missed. Everything. We missed everything. What if the word we were trying to rhyme from was wrong from the very beginning?" - Nasikel Frisiae, preface to ETQ
The Extended Theory of Quanta, a so-proposed Theory of Everything, was the first and only fully complete and comprehensive hypothesis forwarded to attempt to bridge the gap between the Standard Model and the Limited Theory of Quanta.
Such a theory is not proven yet.