The Slackbot is actually quite useful for setting reminders and other things. I recently came across a functionality that I think should be incorporated.
I tried to set a remind by saying "remind me tomorrow at 830 to do [blank]". It did not fully comprehend that time request but when I retried with "remind me tomorrow at 8:30 …" it figured out what I wanted. Would that be something easily fixable so that the first request is processed correctly?