On the back of a Wailmer

I'm planning out a new Team Building guide for Generation V (my old one is woefully outdated, and while it still contains, in my opinion, useful information, it's also hard to directly apply it to the current generation of battling), and I was wondering what you guys would like to see in it. What strategies would you like explored? What aspect of team building or battling (they go hand in hand) do you feel should be explained? Should I include more pictures? Of what? Shoot me a VM or comment here if you come up with something, I appreciate all feedback. I want it to be a useful and applicable guide, and any ideas you come up with will help me reach that goal!