I actually sort of like the question. On politics, we have something similar, "I believe in issues X, Y, and Z, what political party should I be a member of?"
What I like in both cases is that there is a good pedagogical point. It is a manageable shorthand for "What do X people believe?" which is clearly on topic. It is no more exhaustive than the question, so it is finite, and it teaches a lot.
As to it being pastoral advice, I disagree. The "life decision" that might be made is that someone checks out a new denomination, which is very hard to turn into a bad thing. Actual "conversion" would be the work of the Spirit, not this site.
Shopping lists are a concern, but the spirit of a shopping question is that they tend to attract opinion "What is the best camera?" without research. Here, you have research into the question (good) by specifying the criteria. If it simply "What church has the best potluck?" No, the question is bad- but if I asked what cameras have an ISo of x and an f-stop of Y with a price point of z, it seems manageable.
Frankly my only concern is that certain users with certain agendas might throw themselves a soft ball. (E.g. I believe that Allah is God and Jesus was a great prophet, not God, and don't give me any of that Trinity nonsense? What denomination should I be? ... Followed by the glories of a non-Christian religion. ) Proseltyzing is punishable by death in those countries, but here I would argue that Downvotes would suffice, since it is off topic.
All told, I think there is good learning to be had out of such questions.