What about this indicates AAA? Planned size of 100 employees, no projects announced yet, no mention of funding. Only thing I see is “cutting-edge” which could necessitate larger amounts of funding to develop, but that’s highly speculative and depends on the direction. I imagine after their Rocksteady experience, the people hired on from that company were looking for something different, not another “AAA” studio with shareholder oversight.
To each their own of course, but it sounds like you basically just “beat” the game, in the same way someone beats Animal Crossing. You just stop playing eventually. I don’t see that as a negative if you enjoyed that time.