This would indeed be incredibly valuable for deals/tickets/tasks.
In our use case, a ticket is a customer request which nearly always consists of multiple sub-requests which needs to be tracked individually.
Hence, a simple table in the note would allow us to organize each sub-request with its relevant data columns and status.
Managing this in a plain text note is a huge pain and forces us to use a Google Sheet for each Hubspot ticket which really defeats the purpose.