If I want a SoC capable of doing low cost user-interface type embedded tasks I need parallel LCD support (or at least LVDS). I'd get an NXP LPC18/40 or an STM32 at the low end or an i.MX5/6 at the high end. Way cheaper with way better application support.
If I wanted to do IoT sensing/reporting, this whole thing is just overkill. Again, a low cost LPC or STM coupled with a GainSpan or TI radio module (that I can bake directly to my PCB). To me, and I could be wrong here, IoT isn't about putting 500 MHz computing resources at the nodes and certainly not for a $75 BOM adder.
At least the LPC and STM are chips I can put directly down on my board and run out of the box. An SOM with a single-sourced connector (and Hirose is notorious for designing unique stuff nobody else wants to duplicate) is just commercial suicide.