ZeroSpace/zs.docs/SystemMastery/Turret Damage.md

category, level_1, level_2, level_3, level_4, level_5, availableSystems, turretDamage, turretAttackSpeed

category	level_1	level_2	level_3	level_4	level_5	availableSystems	turretDamage	turretAttackSpeed
SystemMastery	+5% turret damage.	+5% turret damage.	+5% turret damage.	+5% turret damage.	+10% turret attack speed.	Solaris Reach Xenthic Fields Stronghold Vega Stronghold Tau Inferno's Edge Stronghold Titan's Fall	0.2	0.10

This just seems crazy good on Vynthra.

If you want go go base defense crazy, I don't see how this is not prioritized.