I understand that dealing with time is hard, but it would be nice to be able to include a time in a message and have it automatically convert from my local time to the local time of the person I'm sending the message to.
Typing something like
[12:00 PM] and having it show up for me as "12:00 PM ET" and convert to "9:00 AM PT" for the person I'm chatting with would really help when working with a remote team that spans multiple timezones.
We've got excellent tooling for typing a few extra characters to generate a codeblock with advanced syntax highlighting and other useful features. I feel like there's lots of other—easier—features that could make day-to-day communication more pleasant.