I would like to put forward Model built in Gödel's completeness theorem for reopening.
This question is somewhat vague (as the OP admits), but I think is (i) clear enough to admit a good answer (I have one in mind) and (ii) the sort of question which is difficult to clarify further until one already knows the answer. Ultimately, although it could ...
Request to reopen Derive an atlas of Monge patches for a surface in 3D
Since the votes to close (without any comments), I've added links to sources and multiple links to material that motivates the question. I've also clarified what would constitute an answer to the question.