We've played probably 50 games of TI over the last 4 years or so, and it is really starting to look like Advanced Fighters are almost worthless. You get them too late in the game for the technology to really be valuable, most of the time. The +1 damage is nice, but it doesn't make up for all of the prerequisites. By the time you get it, most people already have largish fleets floating around defending and causing havoc. It seems like by that time, building up enough fighters to really take advantage of the technology simply takes too long. There are very few times where you can build a full squadron of 6 fighters on one planet anyway due to unit production restrictions, and by the point in the game you've got the advanced fighters tech, other people have warsuns and dreadnaughts everywhere.
We've thought about two solutions for this. One would be to make it so that advanced fighters are only counted as 1/2 of a unit each for the unit production allowance, as well as the other benefits. This would make it so that you really can have a lot of fighters everywhere, quickly. Since they count toward fleet supply without a carrier or a warsun, you would almost never have a sudden flotilla of 20 fighters right out of nowhere, but you could make lots of fighters to fill in the gaps in defenses and guard blank squares to limit enemy movements. That seems like that's what Advanced Fighters are for, anyway.
The other option would be to make it so that instead of the other benefits, the Advanced Fighters technology card allows them to have a bonus attack round without retaliation, much like PDS fire or destroyer's AFB. The order would go PDS - destroyer AFB - Fighters - normal combat. That, to me, sounds a bit like a game breaker, though. It's still an interesting idea.
So any thoughts? Anyone else had a problem with that technology, or am I wrong about it being weak? Any other house rules out there?