Your team is using Notion collaboratively with some of your clients now, eh? That's great! We have a collaborative shared knowledge base, what would make this even better? A project management software—let's build that right into Notion as well, because tasks are really just line items in a database, right?
Wrong.
The same issue arises as before. What makes a good project management tool like Motion actually good, is the opinionation and structure. You can't just start connecting tasks to customers to notes to videos to XYZ. That's a surefire way to overwhelm absolutely everyone on your team.
The goal of a project manager is to actually get work done—with Notion as a project manager, you'll be spending more time building out a project manager, tip-toeing the line of product manager (instead of project manager).
Here's a more detailed post of our thoughts on how Notion is not a project manager as compared to the leaders on the market.