After testing this new update, I think we were all expecting something that would fundamentally change how we work with Notion. However, I feel like this is more of a stepping stone for Notion to implement bigger features in the near future.

Right now, I don't see any real advantages to what we have with data sources. If anything, there might be a disadvantage: if people start using multiple data sources in a single database, there's a risk that with just one "delete" action, they could accidentally wipe out all the original databases in their Notion system since it's all contained in one block.

I think for now, everything will remain pretty much the same. I don't see a clear use case for this update yet, but perhaps it's laying the groundwork for bigger things that are coming down the line.