My personal opinion on this is that Research Method/Tool style questions should be allowed and would contribute to the overall content and traffic of the forum. The thought being is people may not know all of their questions yet and are looking for a resource they may not know the proper terminology, be experienced enough, it is not their area of expertise, or they are just curious and figure someone that regularly deals in historical research probably knows of effective resources / tools to use rather than them spending hours hunting and pecking through search engines.
I know Genealogy.SE has also has some contention with such reference lists, but they also do not want to be doing people's research entirely for them (or as Mark stated 'doing their homework for them') so commonly provide references of where to check both in answers but also in the comments.
Another topic is, what is the reasonable amount of effort required before posting a question, does someone need to spend 3-4 hours researching before posting a question and then spend 30 minutes composing it and siting what they have already checked, or is a reasonable refined search and attempt to answer the question themselves OK? I would argue there needs to be a balance and also allow for some noise to facilitate new and existing users engaged and if someone seems like they put some effort into looking into it and not just drunkingly fired off a question because they saw something on History channel and was wondering more about it.
I think questions looking for an archival repository or source material that the questioner can then further research is useful if it is adequately scoped and specialized enough it would not be all over the internet.
Also I think questions about how someone would determine something are similar are also technically reference/resource method questions and should be allowed.
So for example and sake of discussion:
How would I determine the people from Kent that participated in WWII?" or do they need to specifically ask how many people from Kent were part of an armored division?
How would I go about determining the daily supplies consumed by the 3rd Armored Division during WWII? or would someone need to answer a more specific question like from September 2nd to September 15th, 1944 around the Battle of the Bulge? (Yes the dates are not fully inclusive, but that is part of the point)
Where can I find WWII AXIS prisoner lists captured by allied forces in the X region? or does someone need to know who they are looking for or ask like how many officers were captured in the question so it is specific and not a reference question?
In A-C you are enabling the quester, where as the alternative versions the one answering is basically becoming the researcher on behalf of the question taker if it is something that may take extensive research to compile or answer.
My first 12 hours of actively trying to participate in this forum I have seen a lot of opinion and editorial comments which do not contribute to the answer or help refine the question. To someone getting used to the forum's 'feel' this is highly frustrating when it seems more 'snobby' than contributing. So that said opening up this class of questions some of that would need to also be kept in check and instead of giving a "Well how could you not know the 3723rd digit of pie off the top of your head?" style comment to the question and help the questionnaire refine it instead or answer it.
So to revise Mark's proposed:
If you have a question about: . . . Historical events, specific references or seminal references,
If you have a question about Historical research methods and the locating of original or specific reference materials related to particular events..
I personally would come to the site more often if I knew it would provide more of these type answers of where to find information.