Regarding point number 2:
While I also have never faced Lightning Torpedo Frigates in AI hands, I would expect that something that was bad enough in AI hands that it was simply disabled for the AI would not have its problems "solved" by the addition of a 'disable ship-type' hack. For one thing, if I understand the patch notes that added that particular hack correctly, there's no guarantee that any of the Ship Design Servers would necessarily have that ship stored on them. For another, it's possible that by the time you found such a server, a sufficient number of LTFs would have built up in the Special Forces and system defenses to make hacking that server impractical, impossible, or ineffective - it doesn't really matter to me if the AI can't deploy any more LTFs if it already has so many that I can't whittle the numbers down in a non-boring or non-suicidal fashion (yes, a Mark III Nuke would probably solve most of the low-mark ship issues, unless LTFs are immune to nukes, but I think that most of us would agree that using anything more than a Mark I Nuke is relatively impractical, and that using a Mark III Nuke is insane, although I will admit that it's unlikely to result in a boring game). That's my take on it, anyways.