New gamemode: Topsy Turvy

Hey guys, just wanted to showcase an idea I just came up with for a featured game mode. It may not seem like it would be very different at first, but I'll explain why it would feel different later. In Topsy-Turvy every champion has every source of damage (s)he deals reversed, so magic damage and physical damage are flopped. AD ratios scale off of AP and AP ratios off of AD, and lifesteal and spellvamp will also swap. This changes up the build paths for every single champion in the game, and also has cool effects like Zed players legitimately trying out Zhonya's Hourglass and AP champions being able to build different defensive choices against their AD counterparts. Tanks would also be strongly affected. ADC's would become long range assassins. Since AP builds can gain much more AP than AD, ADC's will have their attack speed slightly reduced. I would reduce critical strike damage. AD ratios are naturally higher than AP ratios, so all AD ability ratios will be reduced by a set multiplier and all AP ratios increased by a set modifier, to be determined in playtesting. What do you guys think? Would this be fun?