RS3 is definitely a lot different than OSRS. I believe this is all a take on what was done with Fossil Island on OSRS. Fossil Island is much easier to navigate because of the Digsite Ammy. This Fossil Island will require level 85 agility. When everything is eventually unlocked it seems like it will be quite interesting. If it is as advertised, the combination of Hunter and Slayer should prove to be quite interesting as well.