It's a little more work since the servos don't just have the traditional skin overlays like the other creature/eccentric sims. That, and you have 7 meshes to deal with if you plan on editing them in any way... 4 heads (male, male vampire/werewolf, female, female vampire/werewolf), 3 bodies (normal, male and female formals), and the texture files that go with each. Probably why no one has done a full set of heavy replacements for servos yet, other than texture replacements and maybe a mesh swap or two. Unless one doesn't care for gender differentiation and creature changes, one could simply import the same edited head and body meshes for all of those parts... but if not, it's a good workout to edit them all to fit the mesh types, and quite possible to make.
I had the same desire in mind for different looking servos a few months ago, and made default replacement meshes for my personal use... though it's definitely not better than the original, and most likely not what you're looking for.
It has a boxier head with two of the traditional servo "eyes" instead of one, and oddly-reshaped legs that I can't really describe without showing pictures. Just thought that they needed to look a little more weirder than they already were.
