Ya all we can do for now is make interpretations based on what very little info we have. global communities, global impact, endgame event, sense of danger for eorzea, large & small scale event and he said he would focus on gameplay with 4 and 8ppl parties.

i'm thinking of a mix of conquest, besieged and campaign from ffxi. What you do will have a global impact, guessing some kind of point system for the company u join, more ppl that complete events will raise the rating of said company. Planned campaign type attacks on aetheryte camps by beastman tribes or the empire. Destroy flag in beastman hideout or rescue npc prisoner similar to besieged. all events gives points which you can then trade in for gear, along with instanced quests to take place at said new locations or quests to accomplish when said attacks happen, such as kill enemy leader or collect certain amount of item that drops from said tripe but can get it during the raid only. If they do add new beastman locations then we know there will be a overlord type leader for each tribe, which can be HNMs.

These are the type of events that come to mind for ME when i read interviews about companies. but its all assumption till we get official news.