[Skill-Points] is not a useful tag.
Any question about skill points is ultimately a question about skills. We have a perfectly good skills tag; that's what we should be using. Having multiple tags that essentially cover the exact same topic makes it harder for users to use the tag system to favorite tags they're experts in, to ignore tags they're not interested in, and to search for questions. We already synonym skill-systems and skill-check to skills for this exact reason.