Thanks, Ronen. It is actually a LOT more going on in there. I just didn't want to complicate the question with all the extraneous information. 
It's kind of an odd one...there are "things" that happen at 3 days....other "things" that happen at 5 days....and then looping every 10 days is the only "simple" part in it....almost like 3 different kinds of deadlines happening on one task.
And again....I would love to offer up "extended notifications"...or even another mechanism (like your reporting idea), however this work is only the "enhance" this one particular workflow (they have several like this) while the even larger work is outside the workflow portion. As their budget is tight, there is not a lot of room for spending time/resources/money on workflow re-design. Maybe later.
Thanks!