And now FiiO has officially backed a procedure to allow Google Play Store services of the M11, M11 Pro, and M15 models.
Well, well, well.
I think the two big downers with that are 1. This was developed by a couple of people unaffiliated with FiiO who haven't - as far as I can tell, yet - received credit for development of the process. and 2. That the ability to download apps from the Play Store isn't 100% working and won't work with all apps.
For most practical uses, as a DAP, this should allow for the majority of apps that we'll use for entertainment consumption to be easily installed. That's the biggest takeaway I have, and the biggest benefit. I'll be updating the list shortly to reflect the changes.