The most thing I liked in your system are the two giants and it's moons.
Your last image is interesting. It could be a world of vampires and rogues, or even demons, because this world have, I think, a dark pink or red atmosphere and a violet surface.
About Proxima Centaury System Add-on:
Could you show some pictures of your new Proxima Centaury system? You talked about it and very I'm curious. The new system will have better and more detailed graphics? The planets will be dark? That's because Proxima Centaury is a cool and dim star, and it's many times less luminous than Sun. How many planets and moons you estimate to put in your system?
If you answer these questions, you will help me a lot in creating more worlds to my Sheron'nish Cluster System.
One day we will swim in the subsurface ocean of Europa and take shower in ethane lakes of Titan.