I just got an Odroid Go Ultra handheld running Emulation Station in Ubuntu/Linux with 16GB onboard memory. I’m pretty shocked at the lack of support for these great devices. We started using Odroid boards at work as a replacement for the Pi’s which are always out of stock, and love them – so I picked up a couple of their handhelds assuming there would be some great images – but nothing. 
Your PC will recognize the entire device as a flash drive, so it would be convenient to have an image with the OS and a greatest hits romset that will fit on the 16G internal drive. 
ALSO it would be great to have an updated micro-SD image that will work on the more recent GO-ULTRA. 
This is a really cool device for the money – I hope more people buy them and create some sweet images!