I have some brand motifs for a project I'm working on, and I want to ask the community for input on interesting names. Is English Language and Usage the best place to do so?
This would not be a good place to ask. The Help Center page "What topics can I ask about here?" says questions about "Naming, including naming programming variables/classes" are out of scope for this site.
Speaking more generally, brainstorming questions of any kind are generally a poor fit for the Stack Exchange format and culture. A common viewpoint is that a Stack Exchange question ought to have some kind of single "best" answer that is not primarily opinion-based and that will be useful to future site visitors.