I know that the current meta is AP champ in mid with AD carry with support in bottom lane but I have thought about the potential of switching that up.
Keep in mind that I think this would only work as purple team because the AP champ in bottom lane would want to be able to get blue.
Here is an example team composition:
AP Bottom: Cassiopeia, Swain, or Morgana. Picking an AP champ that can push and farm with some ease. It would be very important for this champ to run flat armor yellows and maybe even an armor quint. The idea would be to push the lane and try to force the enemy AD to lose cs by farming at tower.
Bottom Support: Soraka. Soraka would allow the AP champ to spam their spells even when they don't have blue. It would also allow for the lane to have a lot of sustain and be relatively safe.
*AD Carry Mid: Tristana or Graves. * Picking someone with some form of escape is important here. The rune page should have flat magic resist blues to help with trading damage. Having someone like Tristana who has a lot of range should be able to easily force the enemy champ out of lane.
I think there would be an advantage when trading damage because the enemy champion will be running the wrong runes (Magic resistance vs Attack damage and Armor vs Magic damage). This could potentially turn into getting an early lane advantage. If you are on purple side your AP champ in bot lane could still get blue and be able to push and farm well. With good warding a champion like Cassiopeia could safely keep the lane pushed up to tower with a Soraka support and the help of blue buff.
Could this work in competitive play? Duo Q (with the duo playing as the AP and AD champs)?