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.
I told you how I would not add this again but lately somebody remembered me them and with the last EAW Steam patch, I am restoring the turrets with movement in several ships. It will be a long work but it is not very difficult. This is a small preview from part of the work from two days. It will require some improvements after the additions but I like it.
im glad to see visible turrets coming back to ships!
i always liked seeing them there tracking targets and firing at ships on the move.