As we saw in D2 Ressurected they added some new areas 85lvl, the cool and new thing that we could have in our server could be mobs density increased and some new areas, as totally PVM player i really get bored of the same areas with couple mobs that dont even give u the chance of using your explosion as necro/assasin because merc kill them solo...its really sad :X Also increasing mobs density gives some new classes the chance to be played and shine as BOWER or Rabies Druid... I can give more info and show videos of how it could looks like...
