Strength of funnel on Twisted Treeline (especially at high elo)

My premise: Funneling is unhealthy for the twisted treeline meta. This is primarily related to the fact that it gives significant control of the game to one role and gives too great of an advantage to duo and trio queued players. Following are the contributing factors that have lead to this issue.

Relic shield. The weakest part of the funnel strategy is the early game. (The reason for this is that no item has been built therefore champion strength is relatively close) Almost all funnels revolves around this single item to make it through the early game. Its strongest assets are the early clear advantage and sustain.

Level advantage. As any player knows level advantage is a huge stat boost. Often times funnel players unlock a level 6 at around the same time other players are unlocking level 3 or 4. This experience lead combined with a significant gold lead makes it very difficult to catch or kill the funneler in even a 2v1.

Gold advantage. As most players know the biggest power spike is usually the first or second item. So being able to hit these key points in the early game several minutes before other players combined with the strength of the ultimate is too strong to combat.

Now that I have laid out the problem of funnels being very strong with very little conterplay in twisted treeline allow me to more subjectively speak to it's significance in flex queue.

Funnel games rarely happen in teams comprised of individually queued players due to the preperation and communication. Therefore this gives duo and trio playerers a significant advantage.

Scarsity of high elo games on 3s means that often times Challenger playerers are facing plats. For the sake of argument let us assume a funnel is equally strong to a standard top jungle. By picking funnel you shift the power from the lower ranked player and place it into the control of the higher ranked funnel. This allows the Challenger playerers to have great control of the game introducing another balance issue.

All other players have less of an impact on the game. I know Riot has worked hard to balance Summoner's Rift so all roles can make an impact. However, of you face a good funnel in twisted treeline the bot later and support have relitivly little power.

Solutions. The best option may be some blend of my suggestions or something in the discussion below.

Removal or Nerf of some support items.

Level balancing. This might be achieved by? Nerfing lane experience for junglers. Nerfing exp for players with siginificant level leads or buffing experience gain for level discrepancy from enimy team. Or remove the ability for junglers to gain experience in lane.

Buff towers. Have a steeper ramp up on tower damage to discurage dives on champions who are significantly behind and place the burdon on players to invade.

Nerf jungle lane gold. Players with jungle items should either split gold with laners or gold is lost. Alternatively nerfing the lane gold to 70% could work as well.

This is not an exaustive list of problems with Funneling in twisted treeline, but I do believe it captures the complication at large. At this point I don't think the total removal is necessary, but some checks to help bring it into a better state. Further discussion would be appreciated.