The ERD tool has been very helpful in showing me whether fields and searches I want to cleanup are actually being used by anything else and safe to delete.
Flashlight is very useful to being able to quickly see where a script is being used and how different objects are connected before I change anything.
During the trial of Flashlight, I had a requirement to update all the help on a form in NetSuite...both where it was missing and updating what was there. Flashlight helped me quickly identify those fields with no help and link me directly to make the updates. This alone prompted me to request my company to invest in the full upgrade to Strongpoint.