Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
Here you can watch two battles for compare the new effects. You can compare the Republic units from this battle at Ord Mantell with the units from the next video published at Mygeeto. Clearly there is a graphic improve.
With this improvement the space units are more alive.