I guess. However i feel the problem that arises from leaky fuel lines is pretty permanent and 99% of the time non-reversable if the car catches fire, whereas the TABs and LCAs (whilst still pretty dangerous) can be replaced whilst still being able to keep the car.
Till i have sorted my LCAs (which im in the process of getting parts), i check them before i go for a drive. The TABs have been replaced and i will check/change them yearly (considering the amount of driving i do of the car). Fuel lines are now done too. Besides the lines, those can be checked. Fuel lines tend to show no signs of failing so checks may miss leaks (unless of course the lines are cracked say).
As for the fuse box, i know they can overheat but i dont know what can be done about that. I have all new relays, fuses and circuit breakers and the majority of the car is LED. No idea if that helps or not really