I have two Prefs folders now because I accidentally overwrote some hand edits that took a painstakingly long time. One set allows for corrections to spelling, unreadable characters, etc but does not allow over-writing of main fields. The other is for files that need more substantial work. If there were a way to switch these preferences dynamically it would be great. Now I stop Jaikoz and rename one Prefs folder Prefs2 temporarily while I need the other. It is faster than reseting fields.
Alternatively, or perhaps additionally, a way to have a selection apply to every field on a tab would also be good. So, for example, “Never Alter” could be set for every field on a format tab.