Wow, I'm looking at the changes for 0.8 and it looks like they address a lot of the problems I had with the planet, particularly capturing pylons.
I love that quality has an impact on the pylons. However, I'm not sure the radius is really the most important factor. I may be using it wrong, but really I've just set up one pylon per planet, and I just construct buildings in that LZ, then pick them up and place them where I really want them. Even if they are easier to get, I wouldn't see myself like, covering my planets in a network of them. IMO speed is the thing I would want to upgrade via quality. If the legendary pylon can warp buildings in 5x as fast, that's worthwhile.
I will make another trip to the planet and see how the vault capturing goes. I need more for future planets anyway!