Yep, I really hate the whole retopology thing. I'm hoping someone creates a bullet proof retopo tool with full support for poly count targets and SubD. Probably needs AI and/or Deep Learning.

MoI's modeler has enough control in it's export tools to manage poly targets pretty well. Plus, it has great workflow for baking high poly to low poly, in that you can export at both resolutions with only a few mouse clicks.

The reason I'm not using it in my Alamo project is that I really need the component (instancing) and iterative architectural editing capabilities of SketchUp. Looking forward to MoI v4!