EMS can't be added if segment D and E are not free: What is does the PicoMEM show as PC Memory MAP ?
EMS is also disabled in the FAST RAM Firmware verion.
Of course, adlib is only FM. the trick to use adlib as a digital output is almost not used in games, I never heard that XWing does it.
Joystick will not work if there is already a Joystick port on the machine, the existing one need to be disabled.
Mouse need to load the PMMOUSE driver, what driver do you use ?
With disk flashback, you can use/access the .img file realy easily:
https://robsmithdev.co.uk/diskflashback
The PicoMEM software evolutions are not finished: USB Disk, mount the uSD completely as a network drive, Other sound cards.....