I won't beat a dead horse its Tamer's decision but this can be ruled a kitbash it does change the silhouette. The last disqualification was due to not being 6" the one before was because it was a only repaint and the shape was not changed. Its not a dramatic change by any means but can be concidered a kitbash.The rules as written on page 1 are quite vague and do not specify requirements on how it should be changed. Based on that I'd say the rebel transport should be readmitted as well.
Ground or space worthy ship or vehicle, this one is also wide open too. Feel free to create an orignial design, kitbash two or more existing ships together, build it from the ground up, etc. Keep one dimension at least 6" long (if its close include a pic of your finished vehicle beside a ruler for scale) for at least one side as this can be done in pretty much any scale. Remember, this one can be metal, plastic, wood or a combination in between. Any Star Wars Verse is fair game too (including what is now being referred to as LEGENDS, but what most of us still call Expanded Universe).