An OTU example of where we need these faster space combat rules...
(And, incidentally, even if this did not apply, we would still need them for Traveller games set in, say, the Star Wars universe, but I digress...).
The players, being players, have annoyed the local authorities. They blast off from the Lowport, which throws the odd pulse laser and missile at them. A few rounds later, the ready fighters (or sentry fighters, maybe both) blast off and chase the escaping Far Trader at very close range.
Six minute combat rounds do not really work for that (they
can be shoe-horned in, granted) but, more importantly, they just don't get the excitement needed for an operation like this.
Once the players have plinked off the fighters with their turret weapons, you then move to the standard space combat rules to handle the Corvette that is now slinging itself round the planet to get onto their tail.
That is where I am coming from on these rules
Plus, they have the advantage of being directly compatible with vehicle dogfighting, allowing ships to engage with aerospace fighters - and if it is just a case of transferring those same rules, then we are left with 'why not?' Remember, you can always forgo them in YTU, but they need to be in there to handle the refs/universes where they are justified.
Hope that is clear!