I think it will be interesting...
Wide scale, so to speak.
Because most of the focus would go on the immortals, with some of it going to important heroes, we can have a roleplay that stretches for centuries if we want.
A hero might be favored by a divine patron, go on quests, defeat monsters and save some people. Normally, a story would end with them returning home victoriously.
We can go further. They can become legends, then decades later, new characters can still reference them.
It's an interesting idea. We get to build up a how mythology, so to speak.
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather