When I started working on this puzzle I was really looking forward to the endgame. I had envisioned a nice, well chosen 4 word phrase with minimal repeating letters and most (or ideally all) of the letter pairings being given by the 12 letter answers.
Unfortunately after a couple hours of shifting these letter pairs around I am starting to doubt that the endgame was so nicely constructed. I'm even inferring that unchecked letters in the 12 letter answers do not need checked because there is only one letter that comes after them in the 4 word phrase, and that is still not enough for me to gain a solid foothold in this thing.
Can anyone help nudge me forward?