Is it possible to edit the weight slider? The purpose would give variation. The idea would be, Starting off with a skinny or thin body [which would be the first starting point] If you skip the slider all the way to the other end, the final weight is heavy set [not muscular] Somewhere along the lines of 60% through the slider would be the buff stage before getting into overweight stage.

Is that even possible, if someone actually modeled the other weight forms of the bodies?

And lastly, on this subject:

If the above portion is plausible, would be possible to have your starting speed, strength, and health different, depending on where you are on the slider?

The weight slider is a linear progression from 0.0 to 1.0. You can only change the bounds, everything in between is computed.

In short, the former portion is not plausible. The latter portion should be.

So you couldn't make it : Starting off with a skinny body, ending with a fat body, and in the mid, it's computed as muscular?

But you could change the starting stats of the character based on where it is between 0.0 to 1.0. ?

Have a look at this http://skyrim.nexusmods.com/mods/23448/?

ooooh, interesting mod.