[VelvetKevorkian]

will AB automatically download art into the folder structure as is
or will it use the more common Music/Artist/-structure to dump files?

Music artwork is treated differently than video artwork. All artwork is downloaded to the "artist_information" folder, see music settings. If you want to change the artwork next to your music files, you'll need to use Kodi's export function. 

I set the artist information folder to thew same folder where the music is stored.
Right now, there are 5400 folders - that's why i want to change the folder structure.

So... if art is stored to just a specific folder location my problem will persist ( ._.)