Ability to set VID/PID individually for Xinput / USB HID

Problem

Using the override of the USB IDs is very useful in several context, allowing the user to have several GP-2040 based controller that present themselves as different devices to the system they are connecting to.

Unfortunately though, the behaviour of such systems is not consistent, and a certain HID device with certain VID and PID might work wonder on a - let's say - Linux system, and not at all on a windows PC.

Solution

It would be awesome if the input mode might also alter the PID and VID at the same time.

Like, generic HID would be configured to show with VID 046D and PID C216,
while xinput would just present itself with the default VID and UID.

Do you plan to work on this feature yourself?

I am unfortunately unable to despite having tried hard. I wasn't even able to configure the bloody PICO IDE in months I'm afraid

Start by tracing how input modes select USB identities, focusing on the XInput and generic HID paths and the existing USB ID override configuration. Verify how VID and PID values are applied during enumeration. Done means each input mode can present its own configured VID/PID, with generic HID and XInput independently showing the intended identities.