Aymeric my calender is a hard landscape i.e my appointments, birthday reminders, non movable items like bill payment due dates, expiration dates etc. and it has vast empty spans reserved for work, leisure and interruptions.
Weekly planner would become a beauty if it act as a fluid agent for selecting and pushing few tasks from google task pool to weekly planner and thus filling my empty spans to the capacity and energy I can take (digest) through the day and thus making my day a power pack by completing things in small incremental.
You have got a USP here which no one has, hope you are getting what I am saying there are tons of todos and calender but we don't have something in between, life is uncertain, a day is unpredictable hence it needs a zen tool.
Customer support service by UserEcho