Altering the height/width of an face loop/ring How do I alter the height of the face loop in such way that it does not alter dimensions of the other faces, simple the overall height of the object? In other words, it just pushes the other faces away.
Set the Pivot point to Individual Origins. Then if you Select > Inverse and use Push/Pull it will pull apart the 2 now selected halves, increasing the height of the mesh and stretching the initial face loop.
This might be difficult to do on meshes with complex topologies, though.