I have seen a lot of conceptual development questions (good and bad) being asked. And most, if not all, of them have been closed with the reason: Primarily opinion-based.
I agree, they are primarily opinion based, but sometimes it's nice to get someone else's opinion to compare to. And do we have anywhere else to ask these type of questions for SharePoint specifically? - MSDN you say? But I like StackExchange better!
Not all questions work well in our format. Avoid questions that are primarily opinion-based, or that are likely to generate discussion rather than answers.
People here know what they are talking about, more than anywhere else, so this is the ideal place to ask a legit conceptual question - not just "SharePoint Online, yay or nay?" - but more in the lines of:
I have to develop Application X, the requirements are A, B, C, but D is totally out of the question. Should I go with a combo of Y and Z instead of Q?
Would getting a Programmers-like site for SharePoint.SE be a possibility if there is support for it or are other alternatives better, if yes, which?
This is a brilliant example: How to have privacy