Easy fix/nerf for the gold funneling strategy
I saw a great idea from another user on how to fix the gold funneling strategy - unique passive on JG items "Killing a lane minion awards full experience to this champion". i.e. Junglers can no longer share exp with their funneling support, killing the funnel strat.
The problem - this would introduce a big issue with junglers taxing lanes on a regular basis, and would open up to trolling/etc.
The solution - Tie it in directly with support items. When a jungler kills a lane minion, the experience is not shared with any nearby champions holding support items. This would kill funneling with a support carrying around a support item, but would still share exp with your other laners if a JG chooses to tax lanes.