Those def look GOOD!!! Do you think Strida will bring out mud guards that will go with the 18". Also, is the triangle bag bespoke??
I WANT ONE!!! 
Strida Newbie
The mud guards cannot be installed on Strida after you have replaced the oringal 16" wheelset with an 18" one. Besides, It seems that the XT model which comes with 18" wheels and fenders has been cancelled. 
strida.nl/english/products.php?subpage=sx
There have been triangle bags available in Korea. However, I don’t know if you can still order one from them.
That is a shame. It seems like the 18" upgrade is for fair-weather riders only, then.