Edgeworth is helped by being the one guy who's been allowed to beat Phoenix (fairly, 4-0 doesn't help Klavier because everyone realizes it's crap), plus the two games where you control him and realize just how amazing he is at what he does.
Blackquill's issue to me wouldn't be the loss of intimidation because they do a good job of conveying that Apollo and Athena are terrified of him. It's that he's the prosecutor for four cases, which can be too much and cause player fatigue.
https://imgur.com/WqDcNNq
https://imgur.com/89Z5jrB