Not worth patching old versions, too many ingame changes since then so they're pretty useless for playing MP now.
As for the old render, alas it's gone. The entire non-shader render was switched around the Wii release (to match the Wii version) so the outlines are gone for good.
The closet you'd manage to get now would involve coaxing hampa to re-add the old cell shading option for shaders; which he should totally do since the hardware issues of the time aren't a thing now. ¬_¬