Optional missions from corps/gangs etc and rewards that are based on your previous mission achievements with those factions - not necessarily always based on the best outcome, but rather based on a certain hidden aspect for example if a faction saw that previous mission was handled without causing too much noise (stealthy approach) they would then contact you after a few days giving you an option to take care of a target in stealthy approach, or perhaps the game could check your % shot accuracy if you used a sniper rifle and offer you an assassination assignment where you have to take down your target from far away etc. Not completing mission they way they wanted you to could lower your street cred on higher difficulty levels so it wouldn't always be an instant accept but rather we would need to consider if we can pull this off and if the reward is worth the risk of street cred being lowered if mission is unsuccesful