Not sure of this has been covered elsewhere, but could there be an ‘I chose a bad route’ option in the reasons a workout failed?
I just messed up an over under workout, and in the feedback I marked it as other, but I imagine this might happen more often than sickness or equipment failure ( I hope 
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I recall “Traffic” as an option in one of the surveys, but I don’t know which one… What was it about the route that led to you failing the workout?
The workout was Warlow+1, and I chose a route that had too many corners to allow me to do the overs properly. The power profile ended up looking like 5x9 of threshold without the over parts…
Still a good workout in gorgeous weather though! 
the specific cause is not important, there are so many valid reasons for a failed workout, for example less time then anticipated came across in another topic or disturbed by … . Specially with kids, you might encounter that more then you would like 
But the goal is to tell AT that the reason is external and nothing more. If you want to store more information, you can put it in the notes.