/EDIT - Now that we'll be looking to move the better Icon Request questions over to Graphic Design instead of closing them off that opens up a close reason here. So perhaps this Shopping Request close reason could take its place?
The trouble with setting this as a custom close reason is that it would have to replace one of the existing three reasons currently in place, which are:
- Questions about Site Reviews are off-topic because questions here are expected to be relevant for a variety of people in the same situation. Reviewing a site, flow or interface only helps one person at a specific time. Instead try to ask a focused question about a particular aspect of the design that solicits solutions, not opinions.
- Questions requesting Icon Suggestions are off topic. While the subject of icons is on topic, there's very little value in soliciting suggestions for a specific icon in a specific context. See this meta post for more information about this topic.
So in theory, yes, I agree that it is a common enough issue that a custom close reason would be useful, but the existing close reasons are also pretty common as well.
Taking the Implementation close reason first - questions being asked that would fall into this category are those that are perfectly formed, have a theoretical correct answer but have just been posted in the wrong site for whatever reason. None of the other OT default reasons (too broad, duplicate, opinion-based) would fit this question, so it really does need its own specific custom close reason in my opinion.
The Site Reviews one pops up with alarming frequency, hence its inclusion in the list of close reasons. Now admittedly it could be classed as 'Too Broad' or 'Opinion Based' but due to the frequency of these items coming in I'm not sure if it's a good idea to get rid of it altogether.
Finally the Icon Suggestion post is a long-standing one here, and was included in the original FAQ as a 'don't ask questions like this' status. These questions still get asked here and wouldn't exactly be covered by the 'Opinion Based' or 'Too Broad' closure reasons.
So, therein lies the dilemma. It seems the only custom reason that could be chopped out is the Site Reviews one, but that is one that gets used pretty frequently. Perhaps we could combine them together such as 'Recommendations and Reviews for existing sites and products are off-topic for this site because...' but that seems a little clunky to me as it is shoehorning two different problems into the one reason (and also might make it a bit harder to audit what type of questions are being closed for what reason).
So that's my suggestion.... Although I'm not really sure what I've suggested here.