Interesting. My 20" Dahon runs a 50/11 high gear, which is enough for me, enough to pedal down gentle grades (85 gear inches), but yours looks racy enough that, even with a 52 or 53 ring, I thought you might be running a 10 or 9 high cog.

I looked up the saddle, said a top choice for "trekking bikes", but no comments from the maker or consumers regarding the droop nose. I've seen Bromptons with saddles that had an underside on the front of the saddle that had a nice padded curve to it, to shoulder the bike there, I thought your saddle may be similar.

Straight pull spokes: Not only racy, but it appears to me, ridiculously easy to replace a broken spoke in the field, even rear drive-side without removing the cassette. I hope that becomes more common.

T800: Not famililar with, looked up, looks like a high-fiber-percentage versus resin, there's a formal term for this with fiberglass boats but that escapes me at the moment.