Ok everyone. Renaming those three body will NOT:

1: Alter the texture mapping or UV Mapping in any way shape or form!
2: Alter the way any morphs work!
3: Mess up any JCM's in any way shape or form. (Because any JCM Call to the old name
    will automatically be replaced with the new name with the same search and replace 
    procedure that renames the body parts themselves!)

There is nothing to fear in this suggested change and everything to gain in Wardrobe Wizard and Pose support! I'm pretty certain that PhilC has been doing this long enough to know exactly what he's talking about here.

That's my 2 Pennies worth.