I've now checked the values and placement of all the passive components, and moved some of the traces around to make maximum use of the ground fills.

I'm waiting on that last step because I'm still contemplating moving some components. For one thing, I could rotate the FV-1 90 degrees clockwise to make room for mounting holes for the BLE SPI Friend. For another, I might be able to organize the traces around the MAX11312 if I rotate it 45 degrees counterclockwise.

I'll have until around October 3 to decide whether to do those things (and to do them if I decide to), as that's the day I plan to order the prototype.