I was re-tagging questions and it occurred to me to make a speculative tag for all those questions that are "what if"s and the like.
Alarms went off in my head about what that encourages, considering the issues of breadth that a lot of questions have and a lot of questions are at risk of.
Since not all questions are speculative (many are about requesting expertise), would such a tag have any purpose or is it just an invitation for broad questions that are off-topic?