For the LoRaWAN expansion pack is it a fairly straight forward process to port the communications layer from the existing UART method to i2c?

[JMart.1688]

..

[Tesla DeLorean]

As you're asking the question, the Magic 8 Ball says NO

I2C works well enough, how many I2C Slave devices have you coded in your career ?

[JMart.1688]

I am familiar enough with i2c in general. I was asking because the LoRaWAN stack was setup to use UART and I wanted to know if there was anything specific to the UART setup that would have to be taken into consideration if changed to i2c. Wakeup on start bit, RX interrupts instead of i2c read, timing, clock frequencies, DMA, etc. Or were there any specific recommendations to DO NOT USE I2C, MUST USE UART for this?.