Unreal Engine Version?
This is straight-up a new product request, but this package is currently the biggest reason I have for not switching to Unreal Engine. If something similar existed over there I would make the move tomorrow. It's such a great framework and I don't know how I lived without it for so long.
Recent Unity drama is motivating me to look for alternatives to Unity but Shapes is not something I'm willing to leave behind. I have not found an equivalent in Unreal. Tangentially related to this topic, I have also looked into Godot where i found some encouraging Draw APIs that might work out with sufficient effort. I am prepared to re-buy Shapes wherever an alternative is made available.