I once wrote a long essay on why Routh is my favourite part of LEGENDS which is here:
To sum up, Routh was very stiff and wooden on ARROW, continuing a lengthy run of stiff and wooden performances in DYLAN DOG, SCOTT PILGRIM, DYLAN DOG, CHUCK and others. But on LEGENDS, he came out of the depression he'd been after Henry Cavill replaced him as Superman. His performances became impassioned and heartfelt, Ray Palmer became a joy and I'm sad that Brandon Routh is leaving.
It looks like he didn't ask to be written out. I'm not sure WHY the show would write out what has been a strong and consistent asset. However, if Routh is moving on, I would really like to see Routh perform a lead role again. One of LEGENDS' ongoing jokes, intentional or not, is that Ray Palmer looks like a leading man but clearly does not have what it takes to lead his own show.
Ray's initial hypercomptence on ARROW gave way to a staggering ineptitude on LEGENDS where he couldn't control his Atom suit, was easily outwitted by villains and was in some ways a liability to the Legends. Strangely, this turned Ray from the dimensionless mannequin of ARROW into a fully defined person and Routh went from being a somewhat bland figure of unthreatening masculinity to a real actor.
On LEGENDS, Ray is not the leading man type; he just looks like one, but he is completely dependent on Sarah to direct him, for Nate to support him emotionally and fraternally, for Rory to muscle through resistance and for whoever happens to be around to run interference for him while Ray supplies improvisation, perseverence and scientific brilliance. Deliberately or not, it reflects how Routh failed as a leading man and has at this point functioned best within the LEGENDS ensemble. Within LEGENDS, Routh has really blossomed as an actor.
He's gotten so good as an actor now that if he's to leave LEGENDS, I would really like to see him take on another leading role again. Someone unlike Ray Palmer but who can make use of Routh's ability to go from morose to hyper. I'd like to see Brandon Routh and Courtney Ford headline a reboot of the TV show REMINGTON STEELE. I've never seen this show, but I like the premise:
Laura Holt (Stephanie Zimbalist) opens a detective agency but finds that potential clients refuse to hire a woman no matter how qualified. To solve the problem, Laura invents a fictitious male superior she names Remington Steele.
Through a series of events in the first episode, Pierce Brosnan's character, a former thief and con man, assumes the identity of Remington Steele. A struggle ensues between Laura and Steele as to who is really in charge.
It could happen.