This is a great looking piece, your style is coming into its own, it only needs minor improvements in ambient detail and shaping and you will have a 5 star worthy piece. This piece is substandard in combat capability and efficiency and needs to be improved in order to be able to go head to head with pieces of equal mass.
I might look into upgrading turrets and design, however I am limited in what sizes for turrets I can use for the delicate girders.