I didn't like the change in geometry, especially because it changed after placing the order.
Having a 24 mm increase in reach is a lot.
411mm reach with 563mm stack is pretty extreme for a size S gravel bike for me, also the 85mm BBdrop, same as the new Specialized Diverge, will lead to more pedal strikes riding offroad.
Canyon bike sizing is a bit weird IMHO, a size M bike is huge, I'd use a size XS canyon when for most other brand I'm on a M or an S.
If you compare the size XS grail it has a 385mm reach and 556mm stack, a lot lower than the original fm316 geometry but the reach figure is almost the same.
Anyway, I'm looking forward to have my frame delivered, from your pictures it looks quite good, how's the paintwork quality and finishing?