Doesn't include the jungle.
This is my idea for how this might work. 1 person would go top, 1 bot, 1 jungle, and 2 mid. The 2 mid would split at that splitting point. Minions would spawn for the mid as 2 siege minions every few spawns, 6 mage minions, and 6 melee, and would split in half at the splitting point. Minion spawns for top and bot would be the standard 3 mage minions and 3 melee minions with a siege minions every few. If you destroy an inhibitor for mid, 1 super minion would spawn and go to the side where you destroyed the inhibitor. Top and bottom inhibitors would work as normal.
There would be a special altar/control point for each team's mid (the purple dots), and if an enemy takes control of it, it will start to spawn 3 mage minions and 3 melee minions with a siege minion every few down the mid. This altar/control point will only be able to be captured by your minions, to prevent someone just rushing in and taking control of it for the minions. Killing the strong boss monster would protect your altar/control point from being taken for 1:30 and provide a buff.