I was a big supporter of Flying/Posion, but i may change my vote
Why? I have found that F/poison is not the best defensive typing, altough it does have nice resistances, the facta that it still has a rock-weekness is really bad since every Dory/terakion/sand genie/etc.. carries a Stone edge so he can hit Flying types, also the bug 4x is retained and you also get neutrality to SR which is good, but the main reason is that even if Poison is a good defensive typing, it doesn't treaten anything importan, no Poison move is going to scar dory nor any of it's friends (ground being ressistant to Poison and steal...) Fighting packs a SE move against those, also a way to deal with the more common steel/rock types is better than kill Grass (which you already do with Flying), and a way to attrack Psiquic types while still being able to kill the Fighting types and the steal types is a great thing, aside from psyquics you don't loose a big thing, not even flying dragons carry STAB flying (outside of dragonite in the rain) and this could be a way to scare big treats and at least have a powerful Stab option, while at the same time helping your team to regain the control or "momentum" of the match (which is what this Cap is all about)
The only thing that i have against Steel and other great defensive tyes is that loosing the fighting ressistance is not the best, and you shoud have a wayto deal with set-up sweepers and walls, not by yourself but with help and being able to scare or kill the opposing treath, from all of the new treaths that is even a good ofensive still defensive type and a good STABs options
Why? I have found that F/poison is not the best defensive typing, altough it does have nice resistances, the facta that it still has a rock-weekness is really bad since every Dory/terakion/sand genie/etc.. carries a Stone edge so he can hit Flying types, also the bug 4x is retained and you also get neutrality to SR which is good, but the main reason is that even if Poison is a good defensive typing, it doesn't treaten anything importan, no Poison move is going to scar dory nor any of it's friends (ground being ressistant to Poison and steal...) Fighting packs a SE move against those, also a way to deal with the more common steel/rock types is better than kill Grass (which you already do with Flying), and a way to attrack Psiquic types while still being able to kill the Fighting types and the steal types is a great thing, aside from psyquics you don't loose a big thing, not even flying dragons carry STAB flying (outside of dragonite in the rain) and this could be a way to scare big treats and at least have a powerful Stab option, while at the same time helping your team to regain the control or "momentum" of the match (which is what this Cap is all about)
The only thing that i have against Steel and other great defensive tyes is that loosing the fighting ressistance is not the best, and you shoud have a wayto deal with set-up sweepers and walls, not by yourself but with help and being able to scare or kill the opposing treath, from all of the new treaths that is even a good ofensive still defensive type and a good STABs options