To me, the issue with SC38 Re is not with the choreography, but rather the cinematography. The constant shaky cam and lens flares are what take me out of it. If those two issues could be fixed, I’d be all for integrating the scene. Just look at how good this shot of the doors opening would be for an edit. Better combat, but no jarringly anachronistic cinematography.
I think you absolutely nailed what makes it so jarring. I’d love to see a similar project done with the intention of blending in with the original film.