hi bluwu.

Perhaps, I see almost of what you want.

It is important for achiving your request to separate displaying part and scheduling part.

scheduling part is an independent module.
And diplaying part can parse any schedules from any modules with plugins.
Of course, extracting schedules by modules or categories will be implemented.

The mini-calendar block will be clonable like TinyD.

The separation is just the same what I want to do.