Post date: Mar 04, 2016 5:36:36 AM
I decided that the upgrade mechanic will be a hotkey for quicker upgrading during battle. Pressing the upgrade hotkey (probably "u") will bring up an upgrade menu to upgrade the drone/station.
Upgradeable stats:
Rate of fire
Acceleration (turn speed is directly proportional to acceleration)
Shield (capacity, recharge rate, recharge delay)
Max thrust
Radar radius (maybe)
EDIT
Upgrade panel comes up when an upgradeable target is selected- dismissed with "u".