[ToyAddict]

I think Mattel probably pays a boatload to keep the Four Horsemen busy. So they want to milk them for all they are worth, working on as many projects as they can. I'd bet they're waiting till that marriage dissolves and can't produce the high-quality collector figures. After that, they'll go back to 4".

And/or, they're chicken to go up against Marvel Universe. Maybe they are waiting for it to wind down. Then the market will be wide open for DC figs to come in.

And, obviously, the skill set isn't there. They just don't know how to do it. Once the Horsemen are out, they can bring in a crew that can do 4".