We want to have general reusable questions. Yet, most of the undergraduate questions are terribly local and of no use what-so-ever for future visitors.
Here's a suggestion:
How about forbidding questions that contain numbers?
This would only apply to homework-style questions, and would force users to rephrase their question in a general way, such that it is of more use for future visitors. Instead of
Hi guys, I have this production function $L^{0.3} K^{0.6}$ and resource constraint $L + K = 10$, what do I do?
The user would have to think about
How does a firm solve the problem with a given code douglas production function $L^a K^{1-a}$, where I have a resource constraint such that $L+K = X$.
Then also, with these general questions, it is much easier to spot duplicates.