I am a big fan of the old Greek and Roman gods and goddesses. I would like to see a new season or Challenge event that incorporates those and maybe makes available some new heroes. Maybe the gods need help defending Olympus from the Titans. Zeus, Poseidon, Hades, Aphrodite, Athena, Apollo,… many more. They could easily be translated into 3, 4, and 5 star heroes. Just as some examples…
Zeus: 5 star, holy, all-hitter
Poseidon: 5 star, ice, single heavy hitter
Hades: 5 star, dark, moderate hitter & debuffer
Just an idea. Hope someone sees it. Have a good day!