I have a bit of a roleplaying question regarding the development of fighters, especially beam fighters.
As beam fighters have to penetrate longer ranged weapon envelopes, they can't be used in small numbers. You either have overwhelming numbers, or you are holding them back to hunt down cripples. So I have to wonder, what prompts a race to spend a lot of tech research on speculation, and then a massive change in fleet composition?
Or do beam fighters have an intermediate role, where they are useful in small numbers? In some of Walmsley's early Aurora stories, missile armed LACs could often get within their missile range without being detected or targeted, and then fly back to back to rearm, without taking casualties. But beam fighters do not have that option.
Can they evolve from a forward point defense role? A relatively heavy weapon mass, and slower fighter, designed to engage missiles ahead of the fleet, including 2-stage missiles before they separate. Have a fleet theory of heavily armored slow missile ships which can withstand any missile leakage, and the fighters then chase down empty missile ships. The theory is that at long ranged missile range, the point defense fighters are virtually undetectable, and therefore the enemy will have to target the ships that can actually withstand the pounding.
Or is the changeover something that happens after a major defeat that wipes out most of the fleet, requiring stuff that can be put into play FAST? Or does the changeover happen in peace time, when the obsolete ships are progressively scrapped?
I can see beam fighters evolving from a piracy/anti-piracy concern, from a desire to have a fleet presence in all inhabited systems, in a scouting and counter scouting role... but all that adds up to maybe 10% of the warfleet. An offensive arm beam fighter fleet would probably need to spend upwards of 50% of its fleet expenditures on beam fighters and their carriers and bases.