This idea was incited by this question here, but it should be considered a general suggestion.
The question was being closed as "too broad" because there are many ways for a laser to damage different kinds of targets. Reasonable enough, even if I personally disagree.
Thing is, the asker might not have known that lasers can do that many things; making the question too broad. Sometimes that's a research failure, but there was clearly some effort in energy levels of lights being put here.
I propose that, for questions for which this matters, we introduce an alternate resolution before closing it: allow answers that give a summary of the areas of possibilities, so that there can be one or more subsequent questions focusing in on a specific area.
The idea is that once five votes are reached (or before that), the question is not closed but a tag (e.g. overview-question) is added, to designate that answers should give an overview of the possibilities, as broad as possible, without going into much detail.
Then you get an objective scoring criterion: the answer that gives the most options, or the clearest categorisation of them. Like, to the laser question, an answer could be: "Lasers can melt stuff or they can burn stuff. The colour of the object matters too, and so does whether it is in an atmosphere. Please re-ask with a defined target." Obviously it would be longer than that but that's the idea.
Or a hypothetical "What's the best sword?" question. The best answer would be "Swords can be used for slicing or stabbing. Some armour can protect the wearer against cuts but not puncturing, and some armour vice versa. Please specify the armour of the target." Same thing applies: this is the kind of answer you could get.
The questioner would be helped, and the broad question can still serve a good purpose: because it is broad, it is more likely that other people end up querying the same. I'm sure we've all been curious what sword is best. This question would become a launch pad for anyone else wondering about swords, what sort of factors determine their usability against a certain target, and then their subsequent questions would have more usable detail in them from the start, preventing them from being closed as too broad.
Obviously this tactic would only work if a question, even if it is too broad, only has a finite number of metrics for an answer. Like, "what is the best system of government?" has infinite answers because there are an infinite number of ways to measure government "goodness". Instead, "what government makes a country the wealthiest" can be treated this way, because wealth can only be measured in a finite number of ways (total cash in circulation, average yearly income per person, and some notes about income equality; excepting silly answers like number of pies per head of cabbage).
Thus, I think this idea (if properly implemented) would help the original asker to focus their subsequent question, and it would make the over-broad question usable for other people by providing a place to get started with their research.