To people saying Shyvana needs a rework...
Shyvana isn't a tank. There is the first problem most people have. She is a fighter and THREAT tank. She has no CC, she fills a role just like Garen or Mundo as a consistent source of threat that is tanky. Also the current Bloodrazor isn't good enough to warrant buying it on her unless you really know what you are doing, or are carrying really hard and can afford to go less tanky on her. You have great consistent damage however, so get a Cinderhulk, it and Titanic Hydra even stack well together as both benefit from HP.
I have heavy success on her, and lots of kill potential. Smite item > Titan > Cinderhulk > Deadmans > Banshees > BotrK/Warmogs/Zz'Rot.
If they reworked her into a tank. I'd be mad.
If they reworked her into an assassin or other high damage, squishy fighter, I'd probably quit League.
People who say she has no identity don't play her. She is basically Garen in the jungle. She deals consistent fighter damage, with the ability to leap, become tankier and deal consistent AoE damage. She is a threat tank, that makes herself worth targeting, but doesn't die easily. There are several of these in the game: Nasus, Garen, Mundo, Udyr, Illoai, Morde, Olaf, Renekton, Swain, Yorick and Volibear all serve similar roles in a team fight. They aren't true tanks. Nor do they do the most damage. They are a consistent threat who makes themselves worth targeting, but hard to kill. Shyvana also has amazing counter jungle potential, amazing clear times and great split pushing power as she can outduel many champions in the game. She has a home in the game and it is fairly solid.
Don't push Riot into a rework on a champion who is solid. And have it destroyed and turned into something it isn't.
'Threat Tanks' in LoL:

http://champion.gg/champion/Shyvana She currently has the highest enemy jungle farm in the game and second highest allied jungle farm. She doesn't die much per match. She has great gold earned, damage dealt and damage taken. Due to being a heavy farmer and soloing dragon she falls off a bit in assists and kills. Her win rate is less than 1% under 50. She only needs some minor buffs in some areas. One thing that makes her unique other than her ult, lack of resources in a kit with so many DPS buffs and a speedrun. Is that she is one of the few junglers who it is regular to solo dragon one when you feel it is safe. Early, and all through the game.
EDIT: I can, however, agree that her in game model could use some love.
