NRC views significant change as only a few items, another term of college completed to include degree conferral, or change in OAR score.
Reserve boards are nothing like active boards, what you described is what they do for reserve boards and those are much more involved as they are looking at people who have a significant background in the field they are going into or they are prior officers coming back in.
Active boards for aviation/SWO are fast, mere minutes at best for each application, sometimes they make broad cuts without looking at the applications, most times selections are done based on GPA, often they don't even read the LOR's, and if they need to it is due to a waiver and the person is on the fence. In effect most of the application is barely looked at, unless you have an issue in your background.
