I discover trackables with the correct date, for example when I have seen them at events.
When I visit geocaching.com/track/ discover-page, the form remembers the last discover date. This way I can log the TBs of the event from December 10th individually, then those from the event on December 14th and then those from yesterday on December 19th.
Project-GC's Discover Tool always shows the current date in the form (today December 20). Here I would like a possibility (checkbox) for "use the last log date".
I especially like to log coins by owner individually - because some coin collections are very expensive and deserve an individual log.
E.g. "Thanks Peter for showing your coins today", "Thanks Tom for showing your new Giga Berlin Coins" and in another discover job "Thanks Melli for showing your fine collection". Thus I've several jobs with multiple tracking codes and different log texts to run.
Unfortunately I sometimes used the wrong date. Not bad but not beautiful either.
So the behavior of geocaching.com/track/ would be fine (as option).
Of course this functionality does not have to be implemented on the web server. It is also completely okay if this happens with a cookie or otherwise locally in the browser.