Imagine the swarms of X-wings that spawn every 20 seconds, each one with 6 homing missiles...
*beepbeepbeep beeeeeep* Oh crap I have to evade.... *evades it* *beepbeeepbeeeeeep* oh crap.... *beep beep beeeeep* .....damn... you superior Xwings with your locking missiles and shields of doom and...
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Homing Torpedoes were never used in the movies against TIEs and only after the Xwing games did the idea of a homing anti-fighter torpedo emerge. If this were a game where you were always the rebels fighting the good fight against overwhelming numbers of TIEs then sure allow lock on... the case is not like that and I can see alot of people complaining about the underpowered missileless TIE's if this were to happen. Superior manuverability helps only in fighter on fighter action NOT missile on fighter action.