there is a cost to everything. noob proofing especially. unless you have ever noob proofed something, you will never understand the high cost for an impossible goal.
there is the api, there is the documentation. do it right or expect a crash. its called COMPUTER CODING for a reason.
the biggest cost to noob proofing is dev time. next is processing power. it takes computational effort to check, and check, and double check every line all the time.
if you really wanted stability, then you would only be adding lots and lots of rules. which is good. i like rules.
a program that is unstable is a program that is unpredictable. ending the active_camera always causes crash. thats stable.