They can be really good for patrolling--but even more so in space battles as support units.
Let's say there is an enemy Frigate.
V-V-------F-F-F-F------------EF-EF-EF
V-V-V----F-F-F-F--------------EF-EF-EF-EF----Frigate
V-V-V-----F-F-F-F--------------EF-EF-EF
V-Vulture
F-Fighter
EF-Enemy Fighter
The Fighters will be dog fighting in some sense with the enemy fighters. The vultures can swarm upon the Frigate, perhaps even enter some launching bays and cause havoc. There will be so much chaos and literal shields of flying fighters on both sides that turrets can't possibly hit these very much--especially with their presumed much greater space speed and heavy armor they will be a feat to take down.
V------V--------V
V---Frigate-----V
V------V--------V
They could easily make some form of surround and do large mega barrages upon the Frigate in simultaneous function. This would decimate any Frigate severely. They could be great support units, that is all.
Aloysius:
-Less than half a of percent of players have the General rank on Xbox Live.
How is the General rank fair again?
Halo Fanboys. The next most annoying thing next to Jonas Brothers fanboys.