Yes, having the ability to track how long since a match has been called...
Or a time stamp for when we indicate a match in progress and again when we input the score to advance the bracket would be incredibly helpful.
triple elimination is equally useful in darts. I support this idea.
If I may offer a simple workaround...
I normally use an excel spreadsheet which allows me to maintain an entry list of people for not only the current event, but also a complete list of all participants from previous events. With this I can copy and past into a Windows Notepad text file, then paste into the BULK ADD feature on Challonge...works like a charm.