Or it could be made not to target corvettes...or it could target corvettes, but do less damage to them, perhaps?

Just can't kill this thing with frigates unless you steal all its antimatter .  Then its just a sitting duck.

Which is why I really wish every faction had an effective means of depleting titan antimatter.  As it stands Vasari have a great tool for doing so(kortul), TEC have a less-then-ideal tool(EMP has a pretty long cooldown since it's AoE), and Advent doesn't have squat since not even the damage/antimatter aspect of Detonate Antimatter can be used on titans.  Then again, in general I think the idea of depleting the AM of a titan so it can't do it's thing feels a bit lame to me in general(not much different from the CC effects titans are immune to)-but it strikes me as a bit of an issue that some factions are substantially more adept then others at shutting down titans in this fashion.

Then again the TLT is a special case I suppose, honestly I'm of the opinion that putting such a strong AoE damage ability(mostly due to the insane area it covers) on a titan who's main selling point is it's borderline invincibility(3 defensive skills and high base hull/shields) may have been a less then wise idea.

i had 50 corvettes and someone used missle barrage, poof. 

(along with basicly anything not a flack frig or heavy, but...)

nothing new here.

still, aoes are the counter to mass corvettes, units which, otherwise would basicly be the only unit youd ever need to build as long as you can play dodge the flack frigs.

Yep

If you give an ability the capability to target frigates it will also target corvettes as corvettes are frigate entities according to the game. They are truly no more than glorified frigates.

True, but Lavo's point was that the frigate target object also includes corvettes.  Why there are abilities that contain both "Corvette" and "Frigate" as target objects, no one seems to know because it appears to be redundant.