With some help from an RF professional I've designed some Moteinos that have a trace antenna included on the PCB. Here is the regular and the MEGA variants, they accept any 868-915mhz RFM69W/CW/HW radios (they would also work with RFM12B):
In addition, there are now MEGA variants with integrated USB which take LoRa radios but will also work with RFM69HCW. So now the Moteino family can accept any type of RFM69 radio, and also the RFM92-98 LoRa radios. Legacy radios include RFM12b and RFM22b which are also usable on these boards.