For some reason, I always thought that whenever you create your ACP interface to finish development of your next skin, you actually "feel right at home" when you do most of the ACP work. This is basically how things have been since I created blueCube in 2004. Since I once put together what I wanted to make my forums look like serious money's worth, I thought I would do the same with ACP side to maintain some order of the entire template's viewing pleasure. Of course, regardless of whoever else was granted ACP access on your site, it is strict that they have to respect your setting (not defaults all the time) in some way.
At least I know now that if I do make changes to the only ACP interface that phpBB3 provided, there may be potentially problems down the road when looking to update that one part/feature in the future.