Regarding reminders.

For me the best way is as ToodleDo does this:

• an individual email reminder for each task
• email subject = task name
• email body = task description (if any) + direct link to task

This way I always see what task is due without need to open an email with reminder. And when I need — I just open an email and click link and mark it done on site.

P.S. Do you plan to make this option available earlier via some beta testing? If yes, please sign me up :)