I have been working on the Cheyenne II (Frontier and Delta) and it is complete minus the "missile launcher pods". The Cheyenne II have been greatly improved over the first version Cheyenne that was in service during Macross Zero.
The Cheyenne II has a nuclear motor, reworked shoulder, bigger rotating guns, equipped with a removable large canon attached down the hands. It also can also be equipped with missile launcher on top of its shoulder, the leg design has been modernized to move more on the wheels than walking.
The good part for this project is that the Cheyenne II has most of its articulations the same as my previous project the Workroid, so I could concentrate only on the lines. The Work Destroid and the Cheyenne I will be the next ones and I also plan to make a few upgrades on my current version of the Workroid.
Enjoy!