The Gangster themed mod WiseGuys has recently had a revamp and started fresh with a new website and some new concept art.
"The environments will try to convince the user of the the timeline he/she is in. Anti war posters, antique cars, NPC's will serve as nothing else but realistic details that you can shoot to kill. People walking the streets will run when shot or shot at. Be careful when wandering through a croud. Try to blend in because there could just be someone right next to you ready to stab you in the back."
This mod sounds very ambitious, but is a potential big hitter of the future.
You can check out their new site here