I don't find the R4 door flimsy feeling at all. Yeah it's plastic but the sound deadening material backing it gives it a reassuring thickness. Swing action is nice and smooth, the magnet retention means no stress from plastic clips that have to bend all the time. I think the solid steel construction in the rest of the case might make the front door feel flimsier than it is by comparison.
The only two things about these line of cases is that Fractal decided that an extra led for the HDD isn't warranted, yeah sure I know that I can use the power led for that but most cases already have both. Also that the door swings only one way, what if I want to place my computer case to my right?
Is there a video?