It would be great to have an option to show intermediate output in gallery and allow user to modify that intermediate output before running the next step in a chained app environment.
This will come really handy in cleaning messy data which requires some manual input and user can complete their work form single gallery screen.
Currently the only way to achieve it is to build separate workflows/apps where first you have to download the messy data on your local drive and then upload it back via a separate workflow to complete the task.