Welcome to Librarium Online!
Actually just what tank upgrades you'd take in general for a 1500 game
My falcon configuration is the same no matter what the point level, since its worth it to make your expensive tank as good as it can be no matter what
-Holo Feild (mandatory)
-Spirit Stones (again mandatory)
-Hull Mounted Shuriken Cannon
The holo-feild and spirit stones ensure your tank will survive a long time (a holo-feild actually makes a 12" moving falcon 3 times as survivable), and can always keep moving 12" to avoid penetrating hits.
The hull mounted Shuriken Cannon is a worthwhile upgrade from the catapults. It gives the falcon more hitting power, better range on its guns, and a higher volume of shots.
The starcannon is there because I personally like them. Sure a scatter laser has twice as many shots, but the starcannon means you have 4 AP2 shots a turn rather than just 2. The falcon will already have 5 shots from the shuriken and pulse laser, the difference between 7 and 9 shots isn't so great, whereas the difference between AP6 and AP2 is huge.