Well worth the wait to find exactly the right fabric for each step!
I have a quilt in mind that I have been collecting fabrics for a couple of years. As my sense of what will work well together grows, I have added or subtracted ones that were in the 'original' plan. Decided I needed more variety in light/dark and larger/smaller print. But when it finally happens it will be much nicer than if I had just gone ahead then.