"You need something to do remeshing as decimation, simplification, gridification, etc and not conversion of tris to quads."

True, exactly so, to use as a BASE to build further upon. I thought that was obvious since we are in the Poser forum.

"If the final mesh has trinagles or quads is the less important thing"

NOT true, the mesh must be totally free from tris, ngons, concaves, collinears, degenerate facets of any form or shape whatsoever and be orderly (grid). Any vendor of conforming clothing free or commercial knows this.

Edit: If not these prerequists are fulfilled, it can be compared to building the house on a fondation of clay.