Team members have always had access to your body, corpse and vehicles.
This would also apply to containers with code locks, should you want that extra layer of protection.
Anyone can't access it. Only your team mates. If you suspect your team mates to steal from you when the opportunity comes I can't imagine why you'd want them to be in your team.
Benefits of this change:
1) Allowing team members to access containers inside the base without having to give them TC so you can effectivly prevent them from being able to upgrade, remove, etc.
2) Allow team mates to access entities deployed away from base, such as campfires, workbenches, repair tables, research tables, etc without having to drop a TC or share the container allowing anyone to access.
3) For bases with outside deployables like PJs, team members can have access without having to run around and authorize on all the TCs surrounding them.