I wanted to cover this in chat, but I guess this is a better place since we are not ever in the room at the same time.
First, I don't really see the problem with the questions as they're being asked. They are, by definition, asked by those who are non-experts regarding the topic they're asking about or else they would not have been asking the question in the first place. If a question is off-topic (like the pastoral-natured questions), it should be closed as off-topic to let the questioner know that while it may be a good question, it isn't a good question for this site. in this regard, the question quality is immaterial. If there is an expert-level user base to answer questions, then closing offending questions should naturally work the problem out eventually.
...Which leads me to my second point. I don't think that there are many who would consider themselves doctrinal experts who are even likely to find the utility of this site worthy of spending an inordinate amount of time on it. Most of these experts are in churches and seminaries, writing papers, preaching sermons, and working in the mission field. If they are technologically capable of even navigating to this site and finding it (probably meaning they are searching for something), they look at this site and think "Oh, another website where they discuss doctrine. How trite."
Those answering/voting on the questions are more problematic, in my view. In the Goliath Question, I agree that the question is fundamentally flawed. An expert would not ask the question at all, let alone how it is written. But since experts on a topic are not going to be asking questions on that which they are experts, the closing of this question was in bad form. It was much more appropriate to demonstrate why this question is merely a subclass of a larger question in Biblical doctrine and philosophy and link to resources that prove as much.
Regarding the Goliath question, here's what we lose now that it is closed...
In this question, I think the best answer was provided by Affable Geek. He answers the question with the classical doctrinal point: "for God's glory" to which Marc Gravell demonstrates that he didn't read the excellent links that Affable posted and hasn't really thought on this doctrine much.
At this point, Affable's reaction to Marc should be: "open another question, asking how Pharoah's creation demonstrates God's glory." Marc should then ask this question, and Affable (and others) should go through the time to put together a defense of this doctrine that satisfies Marc's misunderstanding, and the one who asked the Goliath question should read it as well. Ideally, Affable links back to his answer in the Goliath question in his new question and gets some upvotes for his current answer, and this answer bubbles to the top of the lot in the Goliath question, even though it would likely not be the selected answer.
So the end result would be that we get a low-quality question with a very brief answer that demonstrates why this question is not the best one and that it is a classic problem in Biblical philosophy. But we also get a very high-quality question with expert-level doctrinal answers, the type that attract people on search engines.
...but as it stands now, we get none of this. We get only a closed question because we aren't willing to put up with the necessity to demonstrate to the questioner why his question is overly broad.