Short version short, seven of them basically become demigods (and the other two survive through other methods), each through their own methods. Continuing to exist on the mortal plane by default, immortal, and more or less balancing each other out. One as a direct result of their adventure, two through their own merit, one was already on their way to that status before the adventure, and three as a reward for their services, especially when taking into consideration that without them ascending, the others would run amok unchecked.
As demigods on the world, they do have limitations to what they can do, not having unlimited power to do what they will, varying in nature. Confined to a zone of influence unless visiting each other a common one, but also having set amounts of interference they are allowed to make on the world, with them mostly being unable to directly tackle new challenges, because part of their role as demigods is more or less that they are guides to the next generation of adventurers. Some more active than others. (They can do little interventions as minor acts of gods, so to speak, but cannot singlehandedly tackle every issue, every threat, to their world.)
There's more to it than that, obviously, but I'm not quite in a sharing mood right now; I kinda want to sleep.