I have not used Universe Sandbox for quite a long while -
The Problem for me is that Simulating Star Systems ( Stars and their orbiting Bodies ) is a small part of my self-imposed "Job".
I am the Game Master of a Sci-Fi Game set in 2130's - where we have Very Fast FTL Drives.
And virtually unlimited Power from Safe Hydrogen Fusion Powerplants - we still have to Find Resources like Metals and Minerals, in order to build all sorts of stuff.
We Discover new Star Systems, Colonise Planets - Terraform Planets.
We currently have some 44 Star Systems which we have Colonised or which are the Homes of Allied Intelligent Species - and we have reached out to some 90 Light Years from Sol.
There are currently some 160 Billion Intelligent People in the Alliance - called The Phoenix Confederation.
We now have Advanced Wormhole Technolgies - so we can start to move Planets.
This also allows us to move vast quantities of Water - to create new Hydrospheres.
So - back to Universe Sandbox. As I understand it - some of the following Features have been Added, or will be Added in Version 3.
1) Placing Objects in 3 dimensions - x,y,z
I do all my Star Locations by Distance from Galactic Centre - "clockwise / anticlockwise" from Sol - Above / below the Galactic Mean horizontal centreline.
2) Changing Water Levels on Earth - maybe other Planets - Mars ?? Venus ??
We have Fully Terraformed Mars, with a Hydrosphere - but I would like to be able ot show it as we now have it.
We are Terraforming Venus - and it will have a Hydropshere of around 70%.
Other "Fictional" Planets -
?
We have three Planets in Omega System - Arrakine 50% Water, Panthalassa 99% Water, Piscemund 95% Water.
We are gonna move a lot of this Water - so that we will get -
Arrakine 70% Water, Panthalassa 70% Water, Piscemund 70% Water - the remainder will be an Ice Moon around the Fourth Planet ( Gas Giant ).
3) One of the Clever People here did a Sim with an Aurora Borealis - which is something fundamental to any Habitable Planet, which must have a Megnetic Field to block Cosmic Rays and "Solar Wind".
Could this be included ??
4) Will we ever be able to combine all of the "Real" and "Fictional" Star Systems - into a single Sim for our area of "Local Space".
For us this is basically a globe 300 Light Years across - centres on Sol. That is where our "Detector Globe" had been placed.
Finally - I would be interested to know if there are any other Useful Features which I might be able to use - my interest in Universre Sandbox is the creation of a "realistic" ( according to Astrophysics ) Model ( maybe a Static Sim ) of all the things in our "Local Space".
Just one last question - how much is Universe Sandbox 3 ( Update ) likely to Cost ??