Existe alguma razão dada no universo para a roupa de Orson Krennic além da pura ostentação?

No universo, a capa desmente sua educação humilde (de classe média). O Rogue One: Guia Visual Ultimate destaca que ele é ...

not of the principled Coruscanti classes, able to verbally parry and weave in debates

e ainda assim sua capa é descrita como

Aristocratic tailored cape.

O backup é feito pelo livro de fábulas Star Wars Made Easy .

WHY DOES HE WEAR THAT COOL CAPE?

Unlike most of the high-ranking officers in the Empire, Krennic isn't a posh guy from a privileged background. He probably feels like the cape gives him a touch of class. And given that Darth Vader wears one all the time, no one's really going to argue with that, are they?

_{^{Star Wars Made Easy: A Beginner's Guide to a Galaxy Far, Far Away}}

Fora do universo, a escolha do design foi escolhida para distinguir Krennic de Vader , mas homenagear a cinematografia original

StarWars.com: I asked Gareth about connecting Rogue One visually to A New Hope, and he mentioned how in the opening scene he used an inversion — in A New Hope you have Darth Vader flanked by white stormtroopers, and here you have Krennic in white flanked by black death troopers. Was there more of that throughout the design process?

Doug Chiang: Yeah. I love those inverses, because Gareth always described Rogue One, the storyline, as the inverse of Episode IV. Whereas in Episode IV, you had a farm boy who dreamt of being a warrior, for Rogue One, it was the warrior who dreamt to go back to the home life. So you already have, story-wise, a reversal, and even character arc-wise, a reversal. So it was an idea to play with that visually, and it’s a fun thing because it’s a motif that’s in there. In my mind, when you layer those in there, it adds more depth to the movie.

_{^{“WE SET THE BAR SO HIGH”: DOUG CHIANG ON DESIGNING ROGUE ONE}}

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How did Gareth [Edwards] make sure this movie synced visually with Episode IV, which was made 40 years ago? Making inversions was a big tool. “[Episode IV] started with a guy in black surrounded by guys in white. We do the opposite.”

_{^{ROGUE ONE PRESS CONFERENCE AT LUCASFILM – LIVEBLOG}}

O uniforme branco usado por Krennic simboliza sua participação no Imperial Security Bureau .

Do romance canon Estrelas Perdidas lemos que o ISB geralmente tem uniformes brancos. Quanto à capa, isto é como mencionado abaixo na resposta de Valorum, parte de seu desejo por poder e vontade de estar nos círculos mais altos do Império, bem como para ajustar seu novo papel de comandante: ^{_{( Ênfase minha)}}

And so Krennic—attired to suit his new rank of full commander in a white tunic with a white capelet...
_{James Luceno - Catalyst: A Rogue One Novel}

Com relação à túnica:

Quickly, she turned her attention to Captain Ronnadam, who was sitting at his station in the unique white-jacketed uniform of the ISB.
_{Claudia Gray - Lost Stars, Chapter Eight}

Outra evidência das túnicas brancas da ISB é dada na novela Thrawn (Obrigado @NKCampbell )

Out of the corner of her eye she saw a woman in a white ISB tunic angling across the entryway toward them.

[..]

One of them was a white-haired man with a matching mustache wearing the white tunic and insignia plaque of an ISB colonel.
_{Timothy Zahn - Thrawn}

Yularen falando com Thrawn:

'And if the navy decides to toss you out, the ISB would be more than happy to take you.' He tapped his white tunic. 'I daresay you'd look good in white' _{Timothy Zahn - Thrawn}

Um exemplo visual disso é visto com o "Líder" da ISB Wullf Yularen, da New Hope, que também usa branco.

Outro exemplo é Alecia Black, um comandante sênior da ISB.

De Corrida do Contrabandista: A Han Solo & Chewbacca Adventure um canon YA novela parte da Jornada a Star Wars, A Força Desperta série de livros