Supervised neglect?

​Have a look at these x-rays and what do you see. These will be very useful in a few years time. See below for the reason.

​These are the x-ray films I took years ago, they are data, and I've been collecting data for over 14 years. The way I look at these radiographs will soon change, they will come to my workstation with a directive on what to do.
I hope it doesn't say to take out the lower-left seven. In my experience in root-filled teeth, they break, and the patient leaves in pain. The non-clinical phrase "if it ain't broke, don't fix it" was the patient's opinion when I first saw him. He was probably lucky as I was intending to add a bonded amalgam core and a crown. 

From my notes, you can see I did nothing for the sinus on the upper left six. Unfortunately, the radiograph was at the old film variety and has since deteriorated. Should I crown the UL6? My feeling is he may get a recurrence of the sinus which hasn't reappeared in ten years. Sometimes the best thing we can do for patients is nothing at all, but it takes a bit of experience to do it.