yeah, i've played FTL, the mod you are talking about is the captains edition infinite addon
the problem here is that modding in an infinite galaxy is memory, the only way it can be modded in is by changing the galaxy map.txt
file, which can cause memory issues, specifically with saving and loading taking FOREVER, so really the only practical way to do this would be walt adding it in as a feature (cause it would need alterations to the source code)