Cute, tiny and it should be affordable. ASUS just released its Prime A320M-E, this is a AMD A320 chipset based motherboard for Ryzen processors (Socket AM4).... ASUS Releases Prime A320M-E - AMD Ryzen A320 Motherboard
Same thing as a B350M-K I think, with the A320 chipset. Good for business products I guess, I'd never go lower than B350.
A320 isn't meant for enthusiasts. It's an ideal chipset for a micro ATX or mini ITX build with no intent to overclock. Since the Ryzen stock heatsinks weirdly good, A320 makes for a very good low-price platform. For people like us, I agree a B350 is the minimum.