This has been suggested before, and is a nice idea. I think the main concern about doing it officially was the bit about it being a pre-requisite for level advancement. The level system is already criticised for causing trouble by being more than just a reward system for participation, adding a test at each level would make that much worse (IMHO).

Also, I can't image who would mark all the tests.

In the spirit of open source software, you could start your own level grading system and post peoples results on your homepage. Then people could say they had been graded to kiat's level three, or whatever...

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Jeremy
I didn't believe in evil until I dated it.