@DH: Not only have we put the other set in for your evaluation, upon closer examination in-game we realized that for units, nothing about this button approach seems to be a good idea. It would work great for the mission and building buttons (and for that we still prefer the first set with the scroll cutout and 3d-ish approach to the animal paste-ins) but neither one really works well for a unit icon in the plot group list.
We've come up with another approach for the UNITS and were wondering if you wanted the efforts she's put in so far in as the Mission/Building button arts? (and a new set for the units themselves.)