This is well put.
By the way, assuming you have 30,000 songs in your "portable" music library, that's roughly 2000 albums? the album page of portable DAP normally display 9 album arts per page, so to scroll through the music library, you need to go through 125 pages of album art? Is this an efficiency way to navigate your portable music library?
With home music server we can use 10" tablet for navigation, and I can squeeze around 30 album art per page on Jriver, but to do that on a 4" - 5" portable device? I have to agree with
@seanwee, folder view is the way to go. I have a 512GB TF card with over 8000 songs and I used in on N6ii and N3pro, I always locate songs or album faster then going through the library features, even though 8000 songs are well within the limit of N3Pro.