Very simple user case: a wedding planning app where you want to send your client a form to fill with information about their wedding. Form includes some field for general purpose information and a subform for event pacing/schedule.

Clients are invited to create a new row (When? - What? - Where? - Who?) for each thing happening during their wedding chronologically. Ex:

When                  What

10h                      Something

TBD                    Speech

After speech      Yet another thing happening

Next morning     Still stuff happening

But they can't... because you can't manually reorder rows in subforms. Client won't use the subform because its impractical, useless and time consuming.

Its STUPID to only be able to display records in creation date order. You would never have that in a report list, so why in a subform list?!

This as been requested MULTIPLE time. Please stop releasing cute/new feature that we've never requested and find solution to actual important problem.