Two suggestions -- date and numbering
When I have more appointments than fit in a day box (month view) -- it shows a Number like this: 20+2. Two suggestions: the font of the 2 should be grey or smaller. It is visually not easy to distinquish the date number the same. 2nd thing, some calendars are more important than others. I should be able to arrange the calendars so that the most important always are at top, or in the case of a 20+2 situation -- the calendar of my choice is not in the unseen +2 area but the viewable area.