Without proper instruction on when, where and how to use it, a logo can’t take you anywhere.
Ultimately, including public relations at your strategy table helps shape and sharpen your strategy from a brand-messaging standpoint.
Taglines are tools. They should tell your audience what you do. Or, they should set an expectation about the quality of what you do. If your company or product name accomplishes one, your tagline should do the other.
Crafting mission and vision is a process driven by an exercise. Do not sit down to write either of the two. Instead, invest in the process.