so until an official Revisited thread is open, I thought to kick some ideas around here ;-)
as for the ground battle of Endor, this nice "concept art" has interesting pices - it depicts the construction of the bunker and base for the shield generator ...
http://img1.wikia.nocookie.net/__cb20121217221427/starwars/images/0/09/Breaking_Ground.png
maybe put one or two "building" AT-ST in RotJ:R ?