Now teams about to copy what the Eagles’ defense did to the Saints offense.

I'm talking just the basic motions used previously. That is a lot of window dressing with wide receivers, tight ends, and running backs moving. The OL doesn't have to worry about what the motion is, that's not their job. It doesn't matter what player is moving behind the OL, they know the play and who their assignments are. The motion is window dressing to slow the defense down mentally. The Saints would have 2 or 3 guys constantly in motion before the snap. Today was a whole lot of "line up and run between the tackles with Kamara". Lack of window dressing made it a lot easier for the Eagles to victimize the Saints OL.
The Saints used motion a lot. Motion doesn't lead to success without proper execution after the snap. The OL was out of sync after McCoy went out. The OL works in unison. What happens when your car loses only one tire out of four?

Also, motion is a lot more challenging for the defense when it's Hill, because he's a threat to run or receive out of any position other than QB. At QB, he's a threat to run or pass. Moving Hill around makes the OL's job easier. They went into the game without that and then lost the center of the OL coordination in McCoy. And on top of that, the Eagles have one of the best pair of DT's in the league and a really good defesneive coordintor.

Today's game might end up being the most difficult matchup the Saints face all season, and they almost won the game.