Ok, here's my slogan attempts:
HADES -- Five letters never ment so much to so many!
Hades! Under the surface is the seething hot mass!
Hades! Hot lava love? You bet!
Hades! Some like it HOT!
Why go to Hell in a handbasket when you can go to Hades?
Where there's heat, there's Hades!
Hades -- You know what they say about the quiet ones!