Getting the best creative logos right is about 80% of the work done. It sets the tone for the tangibles : the shapes, the typeface, the colors, which come together to create the creative logo.
The time you spend filling in a detailed logo creative brief, now, will save thousand times that amount and a lot more money later. If you can’t articulate it about your creative logo, how you expect a designer to create it?
Although history shows that almost all eventually change their logos; and probably not because they were bad briefs.