It would be very helpful if a new column type is created (Write once column). Basically the idea is to have a text column where the content of the column can be inserted and never changed / deleted (like the ItemID and the Creator columns). This would be great for auditing purposes.
My use case is that I developed an app / feature that generates an auto increment ID (with preceding text etc). It would be great if we can proof to auditors that nobody messed around with the column content.