Reapers_fury just sent me some photos of upgrade parts that arrived.
He requested pieces that would evoke characters from the Transformers Prime cartoon, but that would still fit on Transformer Kreons.
That last set cheats a little. The jointed arms are actually from WuLongTi's shop. The customer wanted custom shoulders that would be compatible with those arms, and WuLongTi graciously sent me the specs so I could design the shoulders accordingly.