Why should the Aurora and Badger carry more firepower? Is it because you want to fire missiles around, because its cool? Or to make combat easy? Or something else?
There is no evidence in the show that such missiles were carried by EA fighters. And you can't argue that "they have the tech, so why not?". Because considering the size of the missiles they would add significant amounts of weight to the fighter. This mass would reduce agility. And since manouverability = life in B5 battles, it seems like a poor tradeoff in real life.
Auroras definetly carried missles on some missions
(Thirdspace is a good example - the fight against Raiders in the opening minutes)...
so the designers must have taken it into consideration when they designed the craft
Of course Auroras aren't behomots with hundreds of missles, but they do have missle carrying capacity!
Small missles would't affect the manouverablity that much;
it would be like 1/20 of the Starfury's mass (1t)
And the additional firepower would be definetly worth a slighter loss of performance...
Besides after firing the missles the craft retains it's full manoverability

EDIT: The fighters must have complex avionics, sensors etc. ( you name it...)
so they could fire such "gifts"
I'm not saying that they should always carry them or they should be their main armament...
/I'm trying not to lose the spirit of TBP here/ But I have several questions to the developers of the Babylon Project:
We have XXIII century - so why can't Auroras carry guided missles (except of PSI Aurora which can carry Panthers)?
We have only dumbfires...OK, they are good against larger ships/fighter packs, but a single enemy fighter actually always escapes them
I accept the fact that in your mod and the series guns have priority, howewer why would EA completely resign from precise munitions on their fighters till 2248-2250(Badger enters service during EA-Minbari War)?
Other races definetly aren't so dogmatic - aside that their missles are way more powerful

(howewer they also don't always utilise them)
What I mean is a missle similar to Panther (fast, needs lock on target, moderate firepower) in quantinities no more then 4 per fighter - in order not to make the fighting too easy for player

IN SHORT: complementary secondary stand-off weapon for certain missions
Uff, lots of writing for one evening

What do you think about it?