The current method of locating damaged building and decorations is a little difficult to locate just what is damaged at times (especially when the icon does not reset/clear and keeps popping up)
So I suggest keeping the icon, but redesigning its use, as a notification of damaged buildings/items at a distance.
As you get closer, replace the icon(s) with outlines of what is damaged.
It would also be nice to be able to repair things that are under or hidden by something else (like a floor or foundation that is under/behind/blocked by a workstation, for example)