I think they jumped the sympathy shark with Albedo when he was literally carried away by angels who resembled the innocent little girls he mutilated to death.

Also The Elements win out over Richard and Herman just because of teh wonderful hentai material they provide.
Reminds me of my all-time favorite Xeno hentai where a dominatrix Elly is playing with a bound Dominia. It's just so... "this is not what I expected to see at all but now I've seen it, I am glad it exists".