4.17 Preview 1 ETA

Tested, Proven, and Much-Loved
4 years of continuous, real-world use by game developers of all types and skill levels. Proudly used in major games including Tinertia, SUPERHOT, Republique, STRAFE and many more.
Prototype Rapidly
Build basic or advanced geometry, right in Unity, with zero creative barriers. Devs agree, ProBuilder is wicked fast and incredibly easy to use- even Collision and UVs are automatically generated. Just build, and have fun!
What about Blender/Max/Maya/etc?
Those tools are great, and you should keep using them for small or highly-detailed objects. However, ProBuilder’s unique ability to build directly in the editor, makes it perfect for level creation, large objects, or simply prototyping. You can instantly edit and playtest geometry, textures, lighting, collision, rooms, or structures- it is true creative freedom. Also, we have made great efforts to ensure ProBuilder is extremely simple and intuitive- nearly zero learning curve!

We need something like this in the engine
https://www.assetstore.unity3d.com/en/#!/content/11919