More Spline Options for Relationships

I love this product, and one of my favorite features is the ability to mark relationships. As trees get bigger, it's often the case that I start to see how different ideas are interconnected.

Unfortunately, my mind maps start to get difficult to handle with so many relationship lines, and I find myself spending more time fighting to get relationship lines untangled and clear to see.

My relaxing mind maps start to get a little rough...

Could we get more advanced relationship shape options? For example, I would love to use something where the path goes through points, and I can make as many points as I want (e.g. Catmull-Rom spline).