Discussion-y questions seem to be dicey no matter who asks them, and should be posted sparingly in my opinion -- you yourself seem to recognize that MO is poorly adapted for exploratory discussions. (The post about reciprocity laws, for example, would be a great way to start a blog discussion, I think -- do you have a blog? Or, it might be something for a talk to students.)
It's never clear how much community consensus there is behind votes to close, or to reopen for that matter. This seems to be a topic of innumerable discussions at meta; you are not the only one who experiences some frustrations with the mechanism. We can't change the mechanism directly, but if you have some concrete suggestions for informal guidelines, that might be a good discussion here.
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