The ERC is now at the same state as the DART SoM schematic. Need to compare various aspects of the current schematic against the EmCraft reference design. The main buck-boost will likely need to be switched to a 5V regulator, or be configured to output 5V.

A regulator will likely need to be added which will output some VBAT voltage level (3.5~4.2V) for the M.2 cards. The SIM7100 for example requires at least 3.4V!