In game Annie and Tibbers vs. Cinematic Annie and Tibbers
I know it's been years but...
Annie in cinematic: tosses Tibbers as he transforms in the air
Annie in game: Makes Tibbers just pop in front of her
I think she makes more sense in the cinematic. Being able to toss Tibbers at a slightly increased range, but a decreased missile speed.
Tibbers in cinematic: A mobile, blazing beast on four legs http://video.golem.de/teaser/1/1/12399/medium-480-leagueoflegendscinematic-snap.jpg
Tibbers in game: A cute, burning plush toy on two legs that punches cute http://www.eatgamelive.com/wp-content/uploads/2015/02/blog_tibbersmacarons_ulti.jpg
I mean I don't mind cute, I just wished he was more mobile. There are very few champions who can summon units, but none of them I personally find to be "true summoners" because of how slow most of the units are. I'm not saying Annie was meant to be a summoner type of champion, but I still see her to have greater cooperation with Tibbers.
My suggestions is that they change her R by: Removing Impact Damage Increasing Range (Slightly) decreasing Missile Speed Increasing Tibbers Movement Speed Increasing Tibbers Damage (Maybe) Add a slow on impact if Passive isn't on.
(Just my opinion)