I've tried to do a map of the solar system. In scale.
Which didn't work out of course.

So I did one which isn't really to scale. It's a one player vs. one AI map. As usual, the AI gets some bonus to be a stronger enemy. Prepare yourself to fight unusual strong light frigates, LRM frigates with very long ranges, etc. Avoid rushing enemy Gauss Cannons, since they aren't as weak as they once were. But especially beware of enemy Battleships. They've got new devastating laser weapons.
Oh, and we really need a gas giant planet model. It's desperately needed.
For the most fun, play against a hard AI with marauders on.
To install it, just download the zip file from the following link and copy its content into your sins folder. There is also a readme.txt file inside with more detailed instructions.
Download link--------------------------
Known issues:
-starting positions are random, so it can happen that you'll start in the AI's place
you should start with Earth, the Moon, Mars and Phobos under your control, if you don't, just start again until you do
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Tips:
- the Pirates hideout is very well defended, don't try to defeat them without a large fleet, but the resources they're hiding could be worth some losses
- the AI's LRM frigates are very dangerous, but quite fragile, destroy them as fast as possible
- never rush enemy Laser Cannon defenses, they do pack a punch
- double up on flak frigates, the enemy doubled up on fighter/bomber squadrons
- the Moon is your main fleet headquarter, ie. lots of fleet points there
- Mars has lots of building space, since it was colonized a longer time ago
- volcanic planets are not very hospitable, so you won't be able to do much with them
- if you're low on resources, there are lots of asteroids in the main asteroid belt around the sun
- defending asteroids is hard, use a fleet for that purpose
- try rushing the AI, it only starts with one planet compared to your four, but it's planets are much better
- beware of Trans Neptunian Objects
- use overwhelming numbers, the AI's fleet is just better than yours
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The improved Gauss Cannons:

The AI got some new toys:

Smaller ships have no chance.

Even other capitals have to fight hard to stay alive against it's main laser battery.