(Edited)
What it could do ?:
A) Open a door that lead to a new Path for the team
B)Open new Path to a team spawn place that can’t go out of their sector by a OP adverse team
C)Open doors to access Balconies or other usualy non accessible chambers some with windows or supply depot, eastern egg chambers…
D)Access to locked ammo and health crates in maps
E) Activate Crane or any machinery
How ?:
With Keys and Pass
How to get keys or pass ?:
some like (D) ammo and health crates keys Throught cards or similar system
Other (like in A) Ingame, you will need to fight for it like an advance spawn pole.(hack the pole modify your pass and you will granted access to these doors/path)
Other like in (B) if game detect that is the team situation ,it could spawn a key/pass in their spawn place (or turn Green an access door panel ) to open a new path to escape… for a limited time
Some keys could be hiden in some Chambers (just imagine the suspense/fight around this to get a special key (Doc run similarity) :=) )
Keys could be :silver,bronze and Gold…
Pass could have some levels access
Well this is roughly the idea ^^ 