It would be nice to have an integrated function that let an operator take a screenshot when he sees a problem. This is far better than having them try to put the problem into words. I have seen this feature on several other HMIs.
I know they could use SnagIt or MWSnap, but that would take several additional steps and would require additional software on each client. Instead, I would just want a little camera icon on the screen, and it would take a snapshot whenever they clicked it. The destination folder, maximum folder size, etc would be configurable properties. I would want to be able to set it up for auto sccreen shots at configurable time intervals as well.