I think if they had worked on how the AI factions populated the world a bit better the overall product would have been more interesting. Esp in the endgame where you can wander around after everything is finished with the main quests.
Once you have all the bases taken over it just becomes too sterile. They should have made some sort of "extra" event after which changes the rules of the AI and spawns new ones in which start to constantly fight over the bases leaving you in the middle of it all.
I could actually do without the story completely had they instead focused on making the emergent gameplay as good as it could possibly be. Some stuff of varying complexity I'd love to see in this game or another like it:
- more types of enemies/animals and individual variations in AI behavior (some cowardly, some aggressive, some cautious etc, with appropriate barks for the soldiers)
- different types of bases (built into the side of a mountain, on poles in the water, abandoned oil platform, underground etc) with more different types of buildings
- added variables like enemy hierarchy with (for example) base/squad commanders that, when killed, lowered the coordination and morale of the entire group and even made some enemies flee in terror (obviously these guys wouldn't just stand out in the open waiting to get sniped)
- at least two different enemy factions and the possibility of dynamic inter-factional warfare (you could walk into the middle of a full-scale attack and take advantage of the situation)
- the ability to recruit mercenaries to assist you in attacking a specific location ("meet me there"), perhaps incorporating subtle dynamic difficulty/enemy population scaling (more/less reinforcements?) to keep things interesting
- weapons of different quality (and yes, weapon jamming on some weapons found in the wild, although in a limited and rare capacity as to avoid it becoming annoying)
- unique loot and weapons tied to specific enemies, for example killing a famous base commander could give you his custom made assault rifle with various adornments
- the ability to scale trees, walls and cliffs provided you had the appropriate equipment
etc
That's where the potential lies.