It would be great to have the option to disable the calendar on specific post types.
Sometimes I create post types where the publish dates are not relevant and therefore the calendar isn't required.
While I'm at it, the scroll feature to move quickly between weeks and months is hyper sensitive with my trackpad (MBP). It's probably a ball ache to try and make that less sensitive - but perhaps you could have an option to disable scrolling?
Anyway, great plugin.