Yeah even if it's a crowded world, not too many people go to any of the islands and especially Romoa/bonebeasts. If you're ever out of ideas, you could look into a script for mages/paladins that covers both the surface and -2 necro area below the surface (not lich hell). There are free & paid scripts for the surface or necros, but none that connect them.
I would average close to 400k exp/hr on a level 60 mage with mediocre magic level, without looting though, running both spawns. Botting the areas separately would be fine, but the spawn rate isn't fast enough.