I am not sure if this is worth a whole thread, but I could not find a Billy Batson thread so here we are!
People joke that Tim Drake will forever be 16 years old, even when the heat death of the universe occurs. But Billy Batson is out here and has been a teenager since Dick Grayson was wearing short shorts to fight crime. In fact, I think he was even older than Dick if you compare their ages in their debut year (12 vs 14 IIRC).
Now obviously Billy could theoretically be written as an adult. The bigger question in my mind is would it turn off his fans? Cause if it wasn’t well received, they would just can it and reboot him as 14-16 within a year or two of the run.
There’s a lot of options as far as what age he gets moved up to. I think a college age Billy, styled like Dick in the 1970s Batfamily run would work just fine and doesn’t make him “too mature”. What are your preferences, forum?