I did a tail rig for Iszy's model, I actually delivered the model last month but I couldn't wrap my head around how to make the tail movement naturally. Initially I wanted to make the animation manually with keyed parameters, however I. certainly cannot do animation, that is one of my weakest skill, I'm a very technical person haha... This week I decided to skin the rig on another parameter and see if it actually works with the movement and guess what... it did. This made me wonder if I can use this method to control other parameters as well so I can design a rig with extreme movements... I feel like doing 2D rig is no difference than doing 3D rigs except you have more limitation >_<