Regarding the non-military-concerns, for me it looks like BI is just trying to satisfy all audiences with the upcoming expansion.
Like it or not, altis life and dayz(-ish) mods have probably doubled Arma's potential player base. Please correct me if i'm wrong.
Furthermore I dont't think Tanoa is "just another island". A thing that is rarely metioned is the superior complexity of official A3 Terrain compared to A2.
I'm talking about map displacements in particular - e.g. there's always a spot nearby to find cover, adding a lot of diversity to PvP battles.
