Ehhhhhh. I could never call any scene Fandaniel was in even the least bit "appealing". He made a terrible first impression on me in 5.3, and that never went away, even when he underwent a name change to "Amon". If anything, the scenes with Fandaniel were carried by Zenos, and not vice-versa. At least Zenos had an interesting type of logic to him, and a desire to understand you and be understood. Fandaniel was just "The Joker except not funny".

Fandaniel is the type of villain they had Emet-Selch pretend to be until he realized it was a bad idea. In this expac, they just stuck with the bad idea.