Hi Rob Fleming
We have set up several hundred projects. We started with creating one Team for each organisation functional team and then creating the projects as channels underneath that team. We had to roll that back and create one Team for each project. The reason is that each project involves different people. They may be a core of people from the organisational functional team but there are often a different selection of these people and always different people from different organisational functional teams. Therefore, we wanted to make sure that only the people actually doing something in the project were in the Team. The problem is when you create projects as channels we found that we had to add anyone involved to the Team which meant the Team just grew and grew. Furthermore, to us projects are finite pieces of work with a specific scope and a start and end date. We want to make sure that the Plan in Planner only has tasks for this project, again a limitation of you create the Project as a channel.
We may be wrong but this was our experience and our workaround.
Hope that helps.
Regards
Stuart