How to Fix the Jungle

Warrior enchantment has a 146.9% gold efficiency. Seriously, what? It's one of the most gold-efficient items in League; meanwhile, Juggernaut and Devourer have gold efficiencies around 110%. While Devourer scales, and should stay, I think Juggernaut should be slightly more gold efficient, and Warrior should be slightly less gold efficient.

Jarvan, Lee Sin, and Vi are all strong precisely because they can abuse the crap out of this enchantment. Instead of artificially reducing their power, why not hit the item that makes them so powerful? This would not only tone down their big midgame power-spike, but would reduce their power in a meaningful way and increase diversity without pulling an Elise.