Thanks for this request. We are rolling out the links to planner boards for groups in Outlook desktop from the group card, so that should help get to the planner task list.
This request seems to be asking for the Outlook desktop tasks list to also show planner tasks. Can you help us understand the use cases and details on the actions you expect to perform with planner tasks in Outlook?
As someone who basically lives and breaths Outlook and the associated tasks, the ability to see planner tasks in the same place as all other tasks assigned to me is crucial for adoption.
We have announced that Group Owners will be able to leverage existing groups to drive membership in Office 365 Groups.
I have a project that I want to create a group for. In that project I have a couple of sub projects that I want to connect to the main project but I also want them to be groups on their own (with their own Planner, Onedrive and so on) what would be Microsoft's suggested solution if not subgroups.