Hey I've got a pretty useful suggestion, considering the number of parts that are being implemented over time.
The idea is, that much like with the selection of weapon type, striking a part will (if it can) display a UI element that allows the style to be chosen, instead of constantly having to cycle through the part styles. This wouldn't be necessary for parts with small amounts of styles, but the standard sword and shield parts are somewhat tedious to construct and can massively increase the construction time.