I for one think that, while still running a little red, your grading makes the film look a whole lot more 1979 than the Blu-ray does. The airlock interior and the Nostromo exterior in the clip are prime examples of scenes that look a lot more natural in your version. And while the fleshtones are still a bit warm, they look more alive than the relatively sterile appearance of the Blu-ray.

I didn't think of the Blu-ray timing as disastrous, but I noticed right away when I got it that it was very different from how I'm used to seeing the film (CAV box set, then 1999 DVD — I have the Quadrillogy as well, but didn't watch it as often), and I prefer where you're going with this.

Which soundtrack do you intend to use as the default?