Anderton
However, I come from the "old school" definition of mastering which also includes album assembly (I know, it's a singles world, nobody does albums any more, etc.). Album assembly is an art unto itself that's different from using mastering to enhance a mix. What I described above is more about assembly, and a multitrack DAW can be an incredible tool for album assembly, while also being able to tweak dynamics and EQ for individual cuts.
True, I have heard some really cool stuff and I am always asking myself as to how or when it was assembled, was it part of the song or was it part of the Mastering process.
One of the styles I have seen is the cross-fade of tracks, but yet these are individual songs or, intros that flows into other tacks but are in themselves separate tracks. Other times I have heard different effects added and you can tell they were not part of the original song or the original was mixed then placed through some serious creative process. The best I have heard is when you have no idea where you are on the CD track list, it becomes a fascinating listening experience.
Maybe I am at a distance but I have been noticing less and less creativity at the Mastering stage, especially given the cultural of immediacy. For example: Not related but to make a point, NetFlix has a "Skip Intro Feature."
And I watched the Crown, I just love the opening Theme. There is something about the music that makes me feel I am floating on air, I would have not experienced this if I had skipped the intro.
I am nowhere near the stuff you described above but I love to hear others do it, I think the reason is, I simply just make one song at a time.
Excited to hear your finished product.