Character development all around! And, if they decide to keep continuing on with their piss take, ignore them. Because, they're so steep in their own piss, they don't realize that they can't even smell how bad they are anymore.
I mean, at this point, even if Jelly revealed herself to be a fake, the slime girl ended up being so competent at her job that no one would care that the original terror tyrant is dead and got possessed by a slime.
Yeah. Kouta Hirano is notorious at being a procrastinator. I think Hellsing alone took forever. Hellsing Ultimate Abridged took just as long but that was because it was a once-a-year thing. Hirano is just lazy.
There's crazy and there's "crazy enough to openly murder people who talk shit about my friends when they're not around me and I will have no regrets about it."