Sure you can crush my LRMs with Illums.
Yeah
And then I can crush your Illums with tons of fighters.
No, because
one - Illums are fekkin' tough even against fighters and are well protected by guardians and possibly the mothership,
two -
you can crush my fighters with flak.
pretty easily.
And then...
Right. What then? Nothing. There is nothing you can do to those flaks. LRFs suck against flaks and HCs or LFs will be out of range. So Illums+flak+repulse = kill all, uncounterbable fleet unless you have triple the resources dumped into yours.
As for your javelis spam being a counter for bombers and repulse... have you really seen javelis shooting a protected aeria drone host? Did you really see the damage? It SUCKS. It takes about 30-40 seconds for 30 Javelis to down an unprotected aeria. You would require literally hundreds of them to kill a medium sized, supported drone host fleet before the bombers wipe you AND remember that strike craft stay around for quite some time after the carrier goes down.