The actual question asked
Not "would this be useful in general," but "is this solving a real problem someone is actually having, this week, with an actual pet." A feature that sounds reasonable in the abstract fails this test constantly, because plenty of reasonable-sounding ideas don't map to a genuine, specific need.
What tends to get filtered out
- Anything that adds complexity without solving a problem someone has actually described
- Features that exist mainly because competitors have them
- Anything that pulls focus away from the core job, tracking a pet's health accurately and simply
Worth knowing: "no" is the default answer to a new feature idea, not because ideas aren't welcome, but because most software gets worse by accumulating features nobody specifically asked for.
What actually gets built
Features that trace back to a real moment, counting breaths by hand being genuinely difficult, a sitter handover feeling inadequate, a multi-pet household losing track of who's had what. Every existing feature in Halo has an answer to "what specific problem does this solve," and that answer isn't "it would be nice to have."