It would be really awesome if maybe not now, but once the game is released, there is a Build Planner like for Diablo3/POE. It will make theoretical builds much easier and not only that but it will also make Build-Tutorials much easier to follow.
When I was trying to get into POE i was looking for builds and a lot of them do not have a build planner and I just skipped those, because I had no Idea what the hell is going on. So this one will be definitely great for hardcore and new players!