Put Tasks in Calendar
Will you be adding tasks to the calendar? Tasks need to be reflected differently in a calendar than an Event.
make sure the mobile app supports them too, no value in just having it web based, also consider the Bridge clients, my tasks are in Thunderbird, so I have a separate email provider JUST FOR TASKS !
Like "Reminders" in Google Calendar. They have a date/time, but will be persistent until you've check them as "Done" or "Skip", very useful feature.