While I agree the days of being Independent are counting down, but ND ain't joining the Big10 any time soon. Football might power the engine but tv rights is the fuel for that motor and the ACC would own Notre Dame's broadcasting rights up 2037 as of today. If ND is joining a conference it WILL be the ACC. That doesn't even mention their 12 year agreement to play against the ACC they already have in football. If you're waiting on them to join the Big10, well, you'll be waiting for a long time...
Agreed. That ship sailed away long ago. Notre Dame is going to protect what's left of its Independence as long as possible. And frankly, I don't blame them if they can do it. They've got rivalries strung out across the lower 48 with USC, Stanford, and Navy. They did have annual games with Purdue, Michigan State, and Michigan that went away but they still have a desire to play those games as often as possible. They can't fully join a conference and play 8 or 9 conference games and still maintain any sort of freedom in scheduling. But if their options run out someday, their landing spot is the ACC. It's not a bad fit, frankly. They have a history with Pitt, Boston College, Syracuse, Miami, and Florida State. It lets them play up and down the eastern seaboard, which has far more fertile recruiting grounds than the Midwest. And it lets them rub elbows with Duke and North Carolina in basketball.
There was a day when Notre Dame + the Big Ten made sense. But that was about 30 years ago.