Bonus Key frag droprate Incentive for support Queue solo (Normals only)
Perhaps maybe even a small ip bonus (20%?)
Between a small sum of ip and keys the incentive should be broad enough.
I don't know about doing this in ranked, but I think testing the waters in normals with this to improve queue times across the board would be beneficial.
I think a few more kill lanes bot in normals is a not much of a real issue. The real issue is those that might queue "support" and hold their team hostage for the bonus and queue times. They are scumbags though and should be punished as much.
Just a thought as won the 14th game in a row without a key frag drop. I would queue support for hurry up collecting the last of the 12 keys (only on 9, this drop rate sucks!)
A better reward system would probably be a token drop from either the win or game played that could be converted into either ip or enough could be crafted for 1 key frag.