[{quoted}](name=gh God,realm=EUW,application-id=3ErqAdtq,discussion-id=79yA8B4E,comment-id=,timestamp=2017-04-09T16:53:31.003+0000)
-use Q and R to stop dashes
Never waste ultimate on a dashing opponent if you can use your Q instead, unless he's an assassin and about to nuke one of your teammates. Your ultimate should be a tool to heal up people and keep threats away, not to dick on the enemy Yasuo and Renekton manhandling the frontline while you're all at full health.
[{quoted}](name=gh God,realm=EUW,application-id=3ErqAdtq,discussion-id=79yA8B4E,comment-id=,timestamp=2017-04-09T16:53:31.003+0000)
-when escaping, they use Q to the direction they're walking and wait to have the time to charge it and have a full duration knock up
It doesn't make a Janna less professional if they aim their tornado at the enemy team + minions. It buys them time to defend a turret because it's naturally tankier when there's no minions around.
[{quoted}](name=gh God,realm=EUW,application-id=3ErqAdtq,discussion-id=79yA8B4E,comment-id=,timestamp=2017-04-09T16:53:31.003+0000)
-when escaping, they never use the slow because it's inferior to the passive bonus movement speed
Actually, you'll ALWAYS want to use your slow if you're being pursued by single person, I.E. Yasuo outrunning you solo while his team is behind. Depends entirely on the situation.
[{quoted}](name=gh God,realm=EUW,application-id=3ErqAdtq,discussion-id=79yA8B4E,comment-id=,timestamp=2017-04-09T16:53:31.003+0000)
-when chasing, they remain in front of their allies to give them bonus movement speed
Depends on your build. You don't wanna be at the frontline as a full AP Shieldbot Janna, which I personally like a lot more than "3000 health Janna with 500 shield that has 0 bonus AD scaling because you have 0 AP".
[{quoted}](name=gh God,realm=EUW,application-id=3ErqAdtq,discussion-id=79yA8B4E,comment-id=,timestamp=2017-04-09T16:53:31.003+0000)
-use R to bring enemies close to their allies a la lee sin
Depends on the phase of the game. Don't actually flash into the enemies in a teamfight to try and displace anyone, it's absolutely terrible. You're making it hard for your teammates to land skillshots and you're either denying them the healing of your ult or you're forcing them to rush to the front to get some of the healing. You can pull Flash Ults in the early laning phase when somebody ganks you or you're better at trading than the enemy team, but never do that in a teamfight if you can avoid it.