BSLIVE First Look at Voxel Remesher Modifier (Blender 2.81 Alpha)
There is a NEW and powerful Modifier that might come with Blender 2.81, it is hiding inside Remesh Modifier, as VOXEL option.
It also has CSG operations (Union, Intersect, Differences) so in general you can mix, mesh and blend all kind of 3D shapes very quickly!