Fun fact, the reason why the Turn-XCEED is covered in Nanoskin is an call back to Turn-A Gundam. Originally the Turn-X’s design was too complex to draw for the show, so a scrapped idea to get around the problem was to cover it in Nanoskin for most of the show.
You can also think of it as a Exia Repair reference, if you’re a filthy casual.
BTW, if it pleases the GM I think the modifications made to the Shin Musha calls for a tweaking of its stats to reflect the increase from 25 to 28. At least for the duration of this battle. As follows:
Destructive Power: 8 (unchanged) Defense: 4 (down by 1 due to removal of shoulder armor) Mobility: 10 (up by 3 due to the addition of a flight unit) Energy Output: 6 (up by 1 due to Tactical Arms + Beam Sabers)