Lots of flaming going on about the capping system but i think there could be like a best of both worlds.
The idea is simple: Making a mechanic that could make you go past the caps, whether you are subbed or not (other than gear of course)
One idea would be to have certain foods that are very rare, like troll meat to allow you to go through the cap, say when you eat a piece of troll meat, that FEP progress can breach the cap.
The other idea is reimplementing the numen system, with a ritual that gives you a buff. Every FEP event that occurs during the buff goes through the cap.