Outside the box thinking is great and to be applauded, but... not when fans are clamoring for Tier 1 characters for years. There's a time and place. Make the statues a majority of the fans want, don't ignore them with 2nd & 3rd Tier characters or lines that no one is asking for. The resources aren't there to do both.
For ex. Flash, MM, Robin, NW... I'm quite sure there are more fans that want these than a Swamp Thing or Gotham Nightmare line.
Mouths to feed... well this is a hobby not a necessity and youre only going to be in business as long as the demand is there, the fad dies so does the business. So getting into this line of work to get rich isn't probably the route to go. I didn't get into my line of work with a 6 figure expectation you go with what youre comfortable with.
That being said, maybe they drag these in demand characters out so they have an income later on, you build out all the main characters now what are you left with? However, I think there are PLENTY of variations of the big hitters a steady stream of profit can always be had.
Whew, sorry.