Spontaneous Explosions

For the MineCon biome vote, my initial choice would be savanna(because things like elephants and giraffes and stuff like that could come?)  But that's before I know what would be coming in each update. 

Each one of them has certainly had some amount of development, because any one of them must be ready to release this year hopefully(If they're to meet their 2 updates per year goal) 

Without knowing anything about the tiaga, savanna or desert update, what would you choose?