Any way to change homeworld distances to star in the map designer ?

Try the "Map Size" but not sure. Zooming out the map may look the same, but the phase lanes are actually a lot longer and will take longer to travel. The sun is in the middle and the Homeworlds are on the outer edge of the ring. Galaxy Forge is your best bet.

Thanks for the annswer myfist0.

I tried that and always the homeworld are in outer zones, and that is what don't like.

Maybe a parameter in any  configuration file that can be mod in anyway ?

If not I'll try galaxy forge but I don't remember if you can use the same  random parameters for the other planets.

Thanks again in advance.

yes, in GF the planet placement is set, but you can add more than you need and have them spawn at a chance so every time you load that map it is different. Connection chance will also change the phase lane connections.

You can also edit your Map Design in notepad

C:\Users\myfist0\Documents\My Games\Ironclad Games\Sins of a Solar Empire Rebellion\MapDesigner

look for 

homePlanetType "TerranHome"
homePlanetStarRadiusRange
    minPercentage 1.000000
    maxPercentage 1.100000

each star is a ring with the star at 0 and the outer edge at 1 so setting to 0.500000 is mid way, but each HW also gets some starting planets attached which are

extraPlanetsRadiusRange
    minPercentage 0.900000
    maxPercentage 1.000000
extraPlanetGroupCount 2
extraPlanetGroup
minCount 1
maxCount 1
planetTypeCount 1
planetType "Asteroid"
extraPlanetGroup
minCount 1
maxCount 1
planetTypeCount 1
planetType "RandomIceVolcanic"

you may also want to set the

extraPlanetsRadiusRange
    minPercentage 0.900000
    maxPercentage 1.000000

for these as well

Oh really thanks !!!!

I think thats what I was looking for, and it doesn't seem complicated to do.

Thanks a lot again Myfist0