I live by the Google electronic calendar and advance email reminders. Of course I rely on it for the standard use cases of putting in appointments in the coming weeks of course. But I also use it for far-advance reminders. Like "plan for Spring break next year" or "set weekend to clean out garage next summer".
What I would like to be able to easily access is a filtered, list view of these kinds of things. The list view part is reasonably well-handled--the Google Calendar Agenda view. And there is a very obvious feature for handling the filter part--Labels. You know, like Gmail has had for ages? Sadly, Calendar has no labels .
I am afraid to say it, but I see Google going the way of Micro$oft...once they have captured a category and killed off all competition, they neglect it .
 This is a ironic, because I although I am a heavy user of Gmail, I almost never use labels. The one time I want them--they aren't there for me.
 Yes, I know there are hacks, like using a separate calendar for each label type. For certain situations those may be okay, but for what I want they are definitely hacks, I already a have a few different calendar types, so I would really rather not solve the problem this way.
 Probably more accurately--if continuous improvements do not have any clear, immediate connection to furthering the advertising business model, they don't happen.