We are developing a component for the HAFAS interface, which is used by a number of public transport companies. And we think about changing the attributes to something more convenient than what the original DB integration provided. See Attributes like HVV · Issue #4 · akloeckner/hacs-hafas (github.com).
So, I thought, better ask first, before we re-invent the wheel just another time:
Do you have any best practices and experiences? Maybe from other home automation worlds (FHEM, …)? Or from other integrations? Or just from personal experience? Is there mybe some kind of de-facto standard already?