I don't want open world filler but...

I feel the Mafia games have always been held back by lacking some immersive activities. I don't think the games benefit from filler, but activities like poker or something would give a more immersive experience.

Mafia 2 was the first one I played and while I loved it, I always felt the world felt quite empty.

What do you think? What non-filler activities could Old Country do that would feel natural