I sat back and read a few threads on why people want the Enclave to return and many bring valid points, central leadership destroyed, major bases wiped out, cut off, out gunned, hunted....and it honestly made me think of something we've seen in several anime's, several stories: adapt or die.
Lets take the Brotherhood DC chapter for example, they came to DC with a set number after a romp in the Pitt, and it quickly became clear they could not keep the fight going after losing so many people, Lyon's caves and brings in outsiders to the fold.
The point is, if the Enclave were (and they probably will) to return there needs to be a fundamental shift in their logic. Eventually you will find someone with a decent rank and a brain in the pile of stupidity that has been their leadership who will take a cold hard look in the face of defeat. When you're back is to the wall you can either A.) hold onto the crap belief that got your there, or B.) Change the way you approach the problem. The Brotherhood took in wastelander recruits, and in some cases the Enclave did...the robot dude at Adams for example.
"They found me starving, and helped me if I helped them."
So imagine for a moment an Enclave that came back from the brink, with a leader who was ruthless, and smart and not overly ambitious, who had a solid command of hardened veterans who have tasted defeat and who molded and army from "the new america" behind them. They took the image of the Enclave, and changed what was behind it...the "pure america" shelved, and became a force people in the wasteland could get behind.
Where they fit into a DLC is something I don't really know, I was hoping we could get that idea off the ground and let it snowball. Like, let's remove the whole "well they are done to death, no more" idea and roll with a new one, a better one alot of us would love.
Make the Enclave backable...because frankly as a brotherhood sentinel I wouldn't mind turning on them post game.