Is there a texture size limit or tri limit? I want to start trying to make heads and bodies, its been 15~years since I last did this. Is there a way to export from blender? I don't think I can do Milkshape anymore; atleast as easily as Blender. I'm excited! Native HD resolutions that are adjustable, apparently higher resolution texture possibilities (Don't know if this is true just basing it off some claims.)

I've never been artistically inclined enough to make my own skins or object models, but I ran into this recently and thought it looked interesting: ts1-blender-io, literally citing from the readme - it's "an add-on for Blender which allows you to import and export the 3D file formats from The Sims 1".