This may be too fancy of a feature, but I'd love to see an image generated of a monthly calendar, with event dates highlighted, and have that image updated beneath a live list every time an event is added to that month.
The visual language of seeing a calendar in Discord the way we're used to seeing them in apps would help a lot of folks plan ahead - specifically folks who don't want to integrate our entire calendar into their personal calendar, or who don't want to go through the several steps necessary to generate a calendar of ONLY events they RSVP to.