People change their clutch quadrants and adjusters because - like a lot of stock parts on the 4.6L - they can, not because they necessarily need to.
The stock setup works fine unless you're shifting so hard that you're breaking them, in which case your not really optimizing your driving technique to maximize the life of your clutch anyway.
My setup is completely factory stock and I finally had to put a new clutch in at 120,000 miles because the throw out bearing failed but the clutch disc still had plenty of usable life left in it. Treating your clutch kindly is your best bet for long life.