Eh, they’ve never had any real sustained success. The closest they came to it was early aughts when they went 7 seasons without being under .500. But they’ve only made the playoffs in back to back seasons once in their existence. They were cool in the 90s when the cubs were irrelevant, but they came up way short. If they ever won consistently they’d get more attention. The problem is the product. The Mets are second fiddle to the Yankees but they don’t really care. There’s nothing wrong with being second fiddle to a team in the same city. You have to overcome it with good investments and community outreach. They won’t be relevant in Nashville with the same product, struggling to keep up with small market franchises that aren’t doing anything themselves