by jcpalmer » Tue Apr 05, 2016 3:42 pm
If Blender is in your pipeline, spending a little time playing with 'Limited Dissolve' will more than take care of your needs.
Just export the high poly base mesh, & import in Blender. Select it, toggle to edit mode, and select all verts to start. Hit space bar to search for a command. Typing 'limi' is probably enough to put it in the search results. It takes a degree threshold. You can play with seeing how aggressive a threshold you can give it. Problem areas can also be excluded based on your vert selection.
The body mesh is way fewer once the masking modifier is applied for parts covered by clothes / shoes, but the big payoff is unless you are doing all nude work is all other assets on the other hand have no proxies. Base Teeth has 21,360 tris. 'Limited Dissolve' works with them too, well any mesh. Avoid doing a merge on import, so you can more easily get their verts down first. A 15 degree dissolve of teeth bring the tris down to 12,738. There is huge damage, but not where you can really see it.
If you have shapekeys, bad things can happen if you do manual face deletes, but 'Limited Dissolve' updates them to keep things in sync.