This line has been dormant for a while, but there are still unreleased figures on the most recent checklist. They are Traag and Granitor from the original arcade game and the pink and green foot soldiers from Turtles In Time. I wonder when we will get those? Surely Tokka and Rahzar are a shoe-in at some point too.
It also looks like NECA is planning a more expansive Tournament Fighters sub-line eventually as we already have Armaggon who looks similar to his Archie comics version, and indeed there were other characters from Tournament Fighters that looked like their Archie comics versions such as Wingnut, Rat King and War, so that would give NECA a big opportunity for part re-use and re-paints for variants between the Archie and Video Game lines.
The future of this line could still be healthy, despite the less popular pixel deco.
I'm still waiting for them to make Tora and Shogun, for this line.