I had tickets to some of those games and watched them from my living room. Build a successful team (and a genuine home ground is a huge part of that) and they ‘we’ will come.
Yes currently Leichhardt gets better numbers currently but that’s probably part romance, part the opposition we play there and part because it’s a bit of a unique experience. A gimmick.
Even better than a gimmick would be going out to watch a good football team play in front of a hostile home crowd at a modern venue. Lots of work to do to get to that point.