Multiple Table extract is useful especially in avoiding extract blow up (useful in handling row level security) since the data is stored separately for each table.
However, I don't see incremental refresh enabled for 'Multi table extract' option. Attaching the screenshot. I know that each table should have a different column to identify the incremental data but if you could somehow make this option available, it would be really great. This will avoid full refresh each time when a refresh is triggered.