TrashPanda, you are asking a business to make less money by making less popular heroes. Let's not forget, sideshow is not totally in control of what they get to make. Marvel licensing could have told them no way to ant man and wasp before. It could have been the discussion of their film relevance that Marvel finally gave SS the ok. And am with ant man.
The Flash and what not is a different story. It should have been done. It hasn't. I am not in the industry so I don't know if there were tie ups, but yeah. But asking them to do a full line evrytime is a little much. Especially when everyone's idea of a full line is different. To me, they could have an idea for a new trinity of statues. Batman ww and superman... And that's the plan all along. Yet people will be upset it's not a full justice league line. Or the OG avengers. Some people may consider Hulk, iron man, cap, Thor, hawkeye, black widow, and black panther enough. While other people complain that there is no ant man,, wasp, etc.