skill tree needs some changes

As a witch player I have a lot build options and I still don't know how well each of them preform. Every time I wanted to try something new or have to change something because of nerf to that skill, I need to spend more than 300k gold on skill tree. That 24 points to weapon or shapeshift is simply not enough when my whole tree is different. If you could have a preset for skill tree or maybe you could buy skill nodes so when you refund, its free for bought ones. It could be much easier to see difference between each build in a game with huge veriety of builds.