My rule of thumb is that if it's not yet in NAM range, it's too soon to create a thread. Not that the NAM is going to tell us much that's reliable--but until that time frame, we really are still in that main thread realm of general pattern and 'looks'.
A caveat to this is that when we have a couple "looks" within a couple days of each other, splitting them out can alleviate confusion. Other than that though--just enjoy what they show in that general look.