Lyrics is easy and will drop a verson into this thread, I dont think fanart hander can deal with shares view, best I can do there is random art - pretty sure that is the case.
Yes, your correct Fanart handler plugin can't do shares view, as it doesn't know what artist your browsing.
I think user should have option to disable/enable random fanart in the installer
So you have 2 behaviours
1. Random Fanart if fanart image not available = Yes
When no fanart handler image is displayed then the background used multimage pointing to music directory.
This is the current behaviour of your mods.
2. Random Fanart if fanart image not availble = No
When no fanart handler image is displayed then the background used is hover_music.png