I’m not sure is it a right place to put ideas or not, but it looks like that one of the possible 3rd-party module might be a network debugging toolset (attachable to the extension pins)
This tool might be helpful for guys who do network engineering and in-field work.
- GSM (card slot)
- Uplink inspection
- Network information
Also this external module can provide an ability for 3rd party applications run on the flipper to use this module as an interface for external devices.