Yes, but you'll need to replace the script RemnantThemeGenerator.java with an altered version.
The relevant section of code is here:
public static final int MIN_CONSTELLATIONS_WITH_REMNANTS = 15;
public static final int MAX_CONSTELLATIONS_WITH_REMNANTS = 25;
public static float CONSTELLATION_SKIP_PROB = 0.25f;
Turn the min and max numbers up and you should be good to go.
Okay, i'm doing something wrong.
So, i changed MIN_CONSTELLATIONS_WITH_REMNANTS to 75, MAX_CONSTELLATIONS_WITH_REMNANTS to 125, and overall amount of constellations up to 300, using Grand Sector mod. Also turned CONSTELLATION_SKIP_PROB=0f
I started new game, and decided to check through devmode on, ctrl+z and going "outside", and i got only 22 remnant beacons.
I turned Grand Sector off, and cranked up both sector size in settings, and "count" in SectorProcGen.java, but got the same result.
Broadcasts the Distress Call.