Well, I personally always start a team out with Rotom-W, just because imo it's the best all around Pokemon this generation. Then just cover it's weaknesses and such, Scizor makes a great partner for it, along with both Latis, Dragonite, Salamence etc. It's still basically cover your types first, then try to work other thins in.
I am currently playing on PO and I just hate the team I am using. I imported it and it doesn't fit my playstyle. I miss how people use to make teams instead of all this check lure sweep buiness. stupid hyper offense =/
You still are here. I recently wanted to get back into pokemon it seems alot has changed. I still have a fetish for flying pokemon. Wanna help me make a team ooka =D