Codelocks should have a maximum number of authorized players. Each extra slot requires an upgrade that increases it’s cost more than linearly. That way, large groups have a harder time setting everything up compared to solos and small groups.
This could maybe also be done with TCs and Turrets.
More players = Extra cost.
maybe 50 metal frag for adding each player?
This is a really nice workaround compared to the TC version that gets posted here a lot. You want through, you pay more per player.