Allowing standard loopholes in general
Don't say "Standard loopholes are allowed". They ban silly things like making up a language where the solution is a single character or just printing the string "the answer". Even if you find these amusing, we got tired of them long ago and that's why they're forbidden.
Allowing specific loopholes, such as fetching the output from an external source can and should be overriden if it makes the challenge better. For example, if the challenge is about getting information from a website, then it should definitely be allowed. This answer addresses allowing standard loopholes in general, as they apply to most challenges.
