Panels is so cool! I hope you don’t mind if I list some things I’ve noticed as a new user.
I’m really missing sub-Collections. As it is, I have 6 “Collections” at the root of my Library for a single comic, the first I’ve migrated to Panels.
It’d be very helpful if Collections had a visible titles in the Library screen. (This would be less of an issue if Collections could have sub-Collections.)
When uploading files to Panels, it’d save me so much time/hassle if they went into the Collection I’m viewing instead of always going into Library root.
(I’ll keep adding to this list, thanks!)