Yes: because some questions here are pretty bad and should not be posted in the first place, and it could help ensure that the members of GAG have quality questions to answer.
No: because that censors peoples opinions and potentiality questions someone might seriously need help on. It kind of takes away peoples voice on this site and it could lead to over censorship of even innocent questions being removed.
There are too many regulations on here as it is, imo. Besides, good troll questions are never seen as a troll questions; they're authenticity is questioned but are never deemed as trolls, so how can a filter prevent them from being posted if some troll questions can't be legitimately spotted?