I've seen quite a few threads demanding Annie reworks.
Yeah, having a stun on 3/4 of her abilities thanks to her passive is strong, especially with that AoE ult. However, I feel like in a game where mobility seems to be getting more and more important, her lack of a blink/mobility spell holds her back from true "OP" and insta-nerfworthy status.
Then again, maybe that's just me. Thoughts?
Annie is a really simple champion with high rewards for understanding her binary kit. It's not about people being "caught out" by her, it's more about the fact that she can instantly turn around any teamfights/skirmishes with her flash + R. Even without flash, a good Annie will be positioned such that her Tibbers will turn the fight. It's a lot of damage, a respectable stun, and it's not possible to dodge it unless you pre-emptively flash.
Annie is to mid/support what Warwick is to the jungle: a very simple champion with very little counterplay (largely due to their simplicity itself). That's probably why people complain about her. Warwick has purposefully been kept under the nerf hammer because Riot doesn't want him dominating the more "complex" and "fun" junglers.
As for mobility, blinks and dashes have become a festering rash on the game. It's very difficult to play any immobile champions anymore, and if an immobile champion is within the meta it's because their kit is heavily overloaded on utility or damage or both. League has always had a probably with overtly mobile champions, right from day 1. When the developers decided to remove turn rates from the game (that is, how fast your champion can turn around), it created a problem with ranged champions being able to easily kite melee champions. They then put a bunch of blinks and burst damage in the game: the assassin age. Since that became a problem, they put a bunch of CC and tankiness in the game without removing enough of the damage: the bruiser meta. Since bruisers became a problem, they decided that megatanks were needed to answer: the tank meta. Now we're slowly emerging from the tank meta and going into another cycle of the bruiser meta.
The kits just get more and more overloaded to answer for the piling up of the past metas' sins. Of course, this doesn't fix anything and just makes a mess of a game. Then you have champions like Annie who have weathered the ages due to good fortune with the nerf bat and binary kits with high rewards and versatile applications.
This has been League of Legends History 101. Remember to do your homework; there will be a quiz next week.
What's up with these people complaining about Annie
She feels like she has more pros than cons ATM.
Also, when she lands kills and you ask yourself: "What could I have done differently in that situation so it could have gone in my favor?"
There aren't that many solid answers.
A lot of it is "don't get near her ever" or "have a significant lead".
I feel like in a game where mobility seems to be getting more and more important, her lack of a blink/mobility spell holds her back from true "OP" and insta-nerfworthy status.
I wouldn't say mobility is becoming more an more important.
If anything, I'd say it's becoming less and less important as the game ages.
's rework has left LoL significantly less mobile than it previously was, a lot of low-mobility mages are taking over mid lane rather than extreme-speed assassins (season 3 most mid-lane picks were assassins), largely immobile marksman like 
are seeing solid play rather than the marksman tier lists being tied exclusively to mobility (season 2 marksman were used almost exclusively because of their mobility).
The juggernaut reworks have also given a breath of life to among the slowest archetypes in LoL.
Mobility has never not been important. Right now I'd just say it's importance isn't as paramount as it has been in past seasons.
Because using the mobility excuse, she counters immobile champions even harder.
Not to mention her numbers are pretty high (It's no fun to play against Bruiser Annie that deals tons of damage and is very hard to kill.)
If I ever see an Annie on the enemy team and I'm top. I usually pick
and try my best to dunk her every team fight so she can't insta stun my team. Problem solved.
