So, the next release is close.
In this release the motion blur will work correct and deformed motion blur is also added.
To en/disable it, use the pass options. So deformed motion blur will not work, if motion blur is disabled.
Both blur types will use a seperate substep which is available in the renderer options misc tab.
I have include the different substeps because it can be heavy to export a big deformed mesh with the same amount of substeps which you use with normal motion blur.
Each mesh will be disabled by default for deformed motion blur, to change it, use the mesh properties, where a new parameter is added to enable deformed motion blur.
It makes no sense to enable it by default if you have many static meshes which aren´t deformed.
This is included because without it, each mesh will be exported as deformed mesh.
It´s more work for you, but faster as to check it automatically if there is a change in vertex positions.
Get -> Material is also included in this release.
Will also try to include pointcloud instancing.