well actually, the vertically stacked wouldnt take up any extra space on your current mod if you moved it like so (i have no idea how to do this, so im giving ideas)
..__...........................__
..__..-----..................__
..__.123456..........123..__..456
..__...........................__
...............................----
two ideas (first one is probably easier, course, i dunno how to do this so i could be wrong LOL)
Basically, ___ is the default style stacky type thingies, where ---- is the overall progress and of course, the numbers are the buttons
course, if you say no, she can deal with it
{[Ignore the . they are there to keep the format of my rather goofy ASCII art :P]}