What about giving Jaurim's fist and all its upgrades %base AD instead of flat bonus AD?
Just for role specialisation? Or if it makes Sheen items too strong, just make them give a % of your base AD as bonus AD. So they're only offensively valuable on high base ad melee champions, and aren't as good in both directions for our good old Quinns'n'Graves.
and
and investing the 400 gold into an item that gives you stats right now, rather than combining it.