Of course they're going to recreate it. That scene (along with the deaths that accompany the betrayal) is what drives the story. The impetus for why the main character is on this journey. It would be like creating a new Batman propety without any mention of his parents being murdered in front of him. Or Spiderman without his uncle dying.
The outrage over this to me seems so frivolous... Like, you have an issue with Casca being in a wet oversized shirt following her rape? From a manga where a female character was nearly raped by a horse... A scene which follows that character grinding her vagina on the main character's sword? Or the satanic orgys with horned demons? Or Guts being molested himself? Or children being slaughtered all the time? The freaking manga opens up with the main character having sex with a demon that uses her sexuality to lure men to their deaths. I know there's the argument about context, but if you're a fan you already have it, and if you're new to the series the costume/DLC/whaetever wouldn't make you think twice.
This series is ripe with dark material, and it's always in your face about it. Fans praise the series for being so uninhibited about all types of violence. To try and act like that's not the case is being disingenuous. To sit here and deride Koei Tecmo for their promotional material seems ironic given the way the source material handles these things. I mean, this is an actual licensed statue that's been released:
https://abload.de/img/gutscascaberserkcensokju93.jpg Which... Umm, was the cover of volume 13? I don't believe that's even an actual pose from the manga itself. Just a pose that was simply done for the cover. A very sexualized pose of Casca draped across Guts' body to sell the manga. I don't know how people can sit here and try to argue that there is a certain nauance to the manga's approach that is missing from what we've seen in the videogame stuff we've seen so far. To me, it's BERSERK. And that's all I see.