Some observations after using CFW v2 b2 on Bittboy, PocketGo and Powkiddy v90

[brodjj]

The v2 b2 CFW is a triumph - hats off to the team and all the contributors for your hard work on this. Here are some observations that might be useful for the next release:

Bittboy (v3): Can't use interface features that rely on pushing the Y button, e.g., to accept deleting an emulator shortcut. These dialogues should use A to accept, B to cancel - would work on all devices.

PocketGo and Powkiddy v90: The underlying controller input mapping for Retroarch seems to have swapped the positions of the X and Y buttons so default mapping of some controller layouts is off, e.g., default mapping of Mega Drive / Gensis games has the A button mapped to X (north) on the gamepad. Expected mapping is for A to be mapped to gamepad's Y (west) button. I believe this also has to be corrected for SNES (X and Y buttons are swapped by default).

All three consoles: USB data transfer rate is slow - often sits below 1mb/sec. Seems to be worse when transferring multiple smaller files compared to a small number of larger files - might be to do with how BTRFS 'revs up and down' at the beginning and end of transferring each file? Any fixes for this or is it just a quirk of the file system and the devices' ability to manage file transfers?