It'd be cool if the command line for Rainlendar could parse something like one of the following formats:
--add="calendar=This is my calendar event=I need to do this thing"
--add="calendar='This is my calendar' event='I need to do this thing'"
--add="I need to do this thing" --calendar="This is my calendar"
It'd be cool to specify category too.
Or the like. Although most would not want to type all that out to add an item, it would be easy to customize Launchy (or other tools) to make use of it.
I like the idea of making the Rainlendar command-line options more robust and not worrying about specific plugins when that's possible. I would think that would simplify the coding/testing because then Rainy doesn't have to learn a lot of different APIs.