Vision: This strip takes me back to some of the darker episodes of the Doctor of the 1980s. While it's true that he doesn't like losing anyone, it has been known to happen to sympathetic characters. Watching Bon-Bon's cyberconversion and transformation from 'victim' to 'menace' is a lot like what a person could expect from the era of the Fourth or Fifth Doctor.
Originality: While this does have a similarity to Rose and the Tenth Doctor's encounter with the Cyberman that used to be the Alternate Jackie Tyler, the immediacy of the horror differentiates it from the source.
Technique: Watching the tension build as they try and fail to save their friend highlights how desperate things have gotten.
Impact: This, as I said, is a rather typical example of a rather sad side-effect of dealing with the Doctor. Sometimes, even he is powerless to stop things and we're looking at the end result.