My only use of MOI continues to be meshing Nurbs models created in Rhino and/or imported from other MCAD packages.
The explicit meshing parameters of Moi’s OBJ export allow you to create really good meshes as a starting point to refine/retopologize in Modo or any other subD package. I’m hoping the Quad-mesher from @DavidEranen in V6 (QuadMesh prototype command available in latest WIP) gets more attention someday again so I can do this in Rhino, but It would have to be as good and fast control as MOI has today.
Also all-quads is not the best solution if you are going to continue to work on it in SubDs, you need areas with less density via ngons. I know some people think this is a sin, but we all work differently.