I don't want to sound like a negative nancy but there's a difference between having a new idea and having a new good idea for a game franchise.
I also have no doubt that it has happened. MegaMan is… unique in the number of collections that have been released for it. And, as we all know, the Capcom Test exists to test the financial stability of making a new release.
Apparently, sales are not enough, since every collection has sold decent numbers and 11 sold the best out of every classic game. I think some folks may imagine Capcom refuses to make a new game because it won’t sell Resident Evil or Monster Hunter numbers, and while that could be true, I highly doubt that they would make a new Ghosts and Goblins if that’s all they cared about. There’s something special about Mega/RockMan. I don’t know WHAT, but this series’ relation with modern Capcom feels like watching a bad soap opera: constantly in a “will they, won’t they” state of things.
I’ve been waiting for nearly a decade AFTER Mega Man 11, let alone the long wait I had before. I will continue to wait, but I do wonder what the state of things is. Perhaps it truly IS that they’ve set the series to rest, but they don’t want to say anything because they still want to sell merch, and I’ve had enough brushes with marketing to know that people are less willing to buy something that is confirmed dead than something that has an unconfirmed chance of coming back. But, perhaps the series is simply waiting for the right person, with the right idea, with the right amount of influence to be in the right place, at the right time, and say “hey, let’s make an actual video game everybody!”
I will continue to play the games in the series that I love, regardless of the fate of the official future of the Man who is Rock.