Hi Serob,
I think what Wallace wants to say is, that texturing has its own unwrap.
-set "unwrapMaxTexResolution=2048"
command is applied for the texturing settings and its unwrap, not the general unwrap.
For unwrap you need to use xml file with wanted settings.
Then your commands could look like:
-simplify
-unwrap "params.xml" :: using the wanted unwrap settings exported into XML file
-reprojectTexture model1 model2 "%reproject_params%"