My personal thought is just this.
Wyrd should use the single biggest thing they have going the storyline.
I would like to see them move in to a yearly storyline. Release some models that a designed for a story pack type thing. Models that move the story forward for example a res version of lady J. Keep the current models in production but for this year work on limited edition lady J res crew who only works with her. If you get her during the story arc play with her have fun but they don't expand on the crew down the road.
You get new one of a kind crews each year and you can keep adding crews with out constantly adding to an expanding powerbase.
I think the idea of hero's coming and going would help the game feel like it has a story. Make players results in tournaments effect what they do next for the story. Other games have done this sort of thing and it does a great job of getting fans who realty care about the game.