I had such lousy shops over the years that when I built mine, even though it was so small, it worked pretty well. I had a lot of planning that went into mine, and after 3 years, I finally made one rearrangement. I am happier with the change now, but I think that is a testament to how well the shop was planned.
I am not bashing anyone who continually changes their shop around.I am a firm believer that if something does not work,change it until it does.I am just saying, planning really well could help you do more projects then rearranging shop tools.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"