Thanks for the info about the settings.txt file for adjusting the base Organics values for all planets. That should help make building troops take some time, even on small, less populated planets.
I have already tried Suicide Junkies suggestion on making Astroids use "Sector Cloaking" to hide units, but not only does it hide the ships/units occupying the sector, but it also makes the Astroid Sectro invisible aswell. I would like to have the Astroids visible to see, but still hide/"cloak" a ship/unit if they occupy the Astroid sector.
And as for Warppoints, couldn't you just use the "Sector Cloaking" ability aswell? I was thinking about doing that, but can a ship without anti-cloak technology still be able to locate and transverse through the "Cloaked" Warppoint? This would limit expansion as an empire would really have to rely on scouts to look for these warppoints.