Aaron wrote:1) Better writers/script
2) Better voice actors
It should be pointed out that this is entirely subjective and that many prefer the SSH version in one or both respects.
Aaron wrote:3) Larger game (Lunar Silver Star Harmony is much smaller)
"Much" is kind of an exaggeration. The only major difference is the fact that you can wander around Silver Star Story's (completely empty, lifeless, and battle-free) world map. The towns and whatnot might be more compact in SSH, but that's only because they're in a more organic, isometric-appropriate arrangement. As far as I can recall, there's still pretty much always the same number of houses and NPCs, so I'm not really sure what's lost. If you're going for scale, the only game that is significantly larger in terms of world scope is The Silver Star.
Aaron wrote:5) Bright awesome colors
Eh, isn't SSH much more colorful than Silver Star Story? Or were you comparing to The Silver Star? Because yeah, I always thought The Silver Star was kind of dreary in terms of palette.