I genuinely don't know how you can't be pleased with this appointment. He was successful as a player as a manager got a team to a Championship playoff then moved to Chelsea where he got a transfer-banned Chelsea to 4th with largely unproven youngsters. Does he have weaknesses? Sure.
I guess the simple question would be, if you aren't content with this appointment who the feck would you rather have been appointed? In my mind, this is as palatable an appointment as they've made in Moshiri's entire ownership.