I know it's an early question but is it possible to run Android apps via Anbox?
Is it possible to dualboot?
Remember 16.04 will be supported in 3 more years.
Would I be able to install a 18.04 desktop container?
I'm a week late, but I didn't look much into this yet. In theory, Anbox works on "official" MediaTek UBPorts devices, but it needs some kernel patches.
Dualboot works same way as with Android/Debian. As for 18.04 container, that sounds like what Libertine does if you want to run graphical apps. Not sure if it has been ported to 16.04 yet, you can check this in general discussions/project GitHub issues as it's not specific to this device.