I dont know how many of the ranaar escaped, if their home-realm is destroyed forever or what.... but i am sure that Damien will have his little evil paws too full in DD2 to bother about telling the Demons of the ranaar location.
And if the gameplay cant keep Damien busy enough in DD2, i am sure you and i will take it upon ourselves to keep him occupied <img src="/ubbthreads/images/graemlins/evilgrin1.gif" alt="" />