Virtual In-Game Bank at Base?

Would be interesting if it is possible for team members to deposit gold at a virtual bank in-game, then the member who requested can make a withdrawal. This is for helping out other teammates, especially supports, when their adc is extremely fed and has gold to spare after they've purchased a big item. It can change the course of the game if, say, the enemy team is going for tanky builds, and the strongest ally member needs some gold to counter them for carrying.

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EDIT (8/18/15): Responding to some of my detractors, and rightly so, that it could be abused. But such gold transfers could be regulated or capped by a standard percentage to each player, like cooldown reductions (40%), based off of an expected average player income per game.

For the sake of example, let's say the expected average player income per game is 1000 gold. The max cap for a player to request is 30% of 1000 gold. So that player can have a maximum of 300 transferred gold for that game session.

Some claim that the team will just feed the ADC with gold. But a team doing this is setting itself up for risking its teammates to feed for the enemy team, since they will be behind in build items. If that is the case, the enemy team may receive more gold from kills, and will financially out-gold the ADC, or the whole team for that matter, that was picked for receiving a boost in gold. That is, atleast one teammate may be economically behind, and have difficulty holding the lane. So no, merely transferring gold to the ADC is never a good/efficient strategy for either team.

Such transfers should best be used to strategically plan situational counters against an enemy team or enemy champ during laning phase, and avoid having an OP enemy team by mid-late game.

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EDIT (8/20/15): Lately I've been thinking much about the problem of snowballing for certain champions, again from the responses I've received. This bank concept needs an extra mechanic to prohibit players from exploiting it. This might be a possible solution.

For the player receiving gold from an ally (must be a mutual decision to receive and send money from both the player and ally), the recipient will have a penalty in their gold accumulation per second. If the recipient does well with the gold used, the player may return the gold to the helping ally to reduce the penalty.

For example, imagine the player has capped his gold requested percentage (assuming 30% -- see Edit (8/18/15) above), then that player has a penalty of 30%, or something along these lines, from their gold accumulation per second. That is, the player would have to send back 300 gold to the helping ally in order to reduce/eliminate their penalty to 0%.

This avoids, or lessens, any player who may have a favorable power spike and snowball because of their advantage and gold. It's now designed for a player in need of help to do well in the particular context of the game as needed.

The incentive for doing well is towards reducing their penalty by giving the gold back to the sender, who won't (shouldn't) receive such a penalty. If the player fails to play well, then that player will have a difficulty contributing for the team, as well as the ally who helped because the ally may be economically behind to buy better items.

Thanks for reading.