YMMV / Luisa Miller

• Unintentionally Unsympathetic: Rodolfo is meant to be a flawed but ultimately heroic character; however, he instantly believes Luisa has lied to him, doesn't even suspect the letter could have been written under duress (even though he knows firsthand that his father wants to break him and Luisa up!), and instantly decides to kill her (just for comparison, it takes an entire play for Othello to be manipulated into killing Desdemona, even though Iago puts a lot more work into his schemes than the Count and Wurm do into theirs). That makes Rodolfo's heroism rather hard to spot.