This sounds cool. I’m not too familiar with the House of Mystery series. It would be nice to have a mystery cartoon that doesn’t involve four teen-agers and an outdated van. 
Detective Chimp is long overdue for his own series. His latest animated appearance was in one of those Teen Titans Go! dance competition episodes.
TV-14 sounds like it would fit to a T. Not sure about 40 minutes though.
This idea caught fire in a certain watch-along:
Show title: something with “Wonder Woman” in it
Style: Animation
Avg. episode length: half an hour(?)
Network(s): HBO Max
Pitch an ep: Originally I was thinking of a Wonder Woman version of BTBATB. Now I’m leaning toward a more cartoonish version of the Lynda Carter series: having WW fight miscellaneous obscure villains, some original and some from DC. After a few seasons, Cassandra Sandsmark could be given a recurring role.