The idea of ignoring the TL restriction (i.e treating Attack:[Target Lock] header as Attack: ) is a good one, and definitely gives you a reason to take low PS generics over say a Gamma Vet
I'm not so sure about multiple ordnance shots per round though - unless the upgrade that allows this is either Unique, puts the cost of a reasonable loadout at 34 points+, or applies some other kind of penalty we'll just end up in Triple Jump alpha strike territory all over again.
Other options might be to give it a Gunner / IGB style trigger - so you only get a second shot if the first attack misses.
If it was a title instead of a system mod you could combine some relatively low powered ordnance like Flechettes with FCS and a heavy hitting missile or Torp - "Deliberately" miss the first shot with flechettes, stress the target, cue up a TL and follow up with a Target Locked (and possibly focused as well) Homing Missile
Nasty - but 34 points for a PS4 with EM (assuming 0 point title) so you cant run 3 of them.
Edited by Funkleton