Table functionality predates instance discovery. It was first attempt at handling multi-instance data, and it turns out to be quite complex in configuration and storage. Then instance discovery was added, and in my opinion it is much better approach for collecting multi-instance data, with tables have only limited use. Tables could be used when data really needs to be processed as a table - when you need to combine data from multiple columns and multiple rows (instances) for example. They also could be easier way to present multi-instance data on dashboards.
Best regards,
Victor
Best regards,
Victor