In the spirit of the season of chaos, adaptive security for high and low sec.
The sec status of systems would be adaptive based on the usage of them. Highly active systems would get a highsec status and systems with near zero usage would see their sec status drop to near null.
The system resources would update during DT, and quiet systems with their dropping sec would regain rare resources, while busy systems would lose them. this would make resources in the game more finite in the sense that if you abuse a system you strip it bare. But if you manage the rate of abuse properly you could score properly. Concord presence would chance in similar way, with quiet systems not being paid attention to. NPC pirates would become harder and more profitable as well.
I think this kind of system would be more realistic for a place like the new eden, specially considering the new direction of chaos. This would open random chances for profit as people could find some backwater system to mine dry, and the systems would shift around as people hunt each other and profits.