Considering that Torpedoes are guided weapons it wouldnt matter where the launchers were mounted as the torps could manuver in flight to their target.

Here's what I sent to AZ last night.  I actually tried to post it here first but the site blew up on me and I couldn't connect (kept timeing out and the post didn't happen).

My first thought when I saw the pictures were that the weapons were too big relative to the body of the ship. If we're trying to go for proportions based on the standard canon rules (which there are arguably issues with) we have the following:

Frigate - HS 5 - 100m long by 15m diameter
Laser Cannon - 40 m^3
Laser Battery - 20 m^3
Rocket Battery launcher - 40 m^3
Rocket Battery Salvo (x4) - 10 m^3 each (40 m^3 total)
Torpedo Launcher - 75 m^3
Torpedo (x2) - 20 m^3 each (40 m^3 total)
ICM launcher - 20 m^3
ICM (x4) - 5 m^3 each (20 m^3 total)
Masking Screen Launcher - 10 m^3
Masking Screen (x2) - 25 m^3 each (50 m^3) total

Total weapon and defense volume = 355 m^3

If the frigate were just a cylinder with the stated dimensions, it would have a total volume of 17671.5 m^3. Let's assume you really only have 80% of that to work with for the tapered nose and such. That still leaves you with ~14100 m^3. At 355 m^3 the weapons represent 2.5% of that space. If a deck is typically 3m in height, all of the weapons and defenses would fit in the volume of a single 15m diameter deck (530 m^3). Heck, they'd almost even fit in a tiny deck that is only 2m (6.5 ft) high (353.4 m^3). And since the LC is going to mounted else where, they would all fit.

I've always imagined, as iggy suggested, that the torpedoes were much like on a submarine. (In fact, I think of KH ships very much like submarines in many aspects.) You have a launch tube that either points out the side of the ship on the weapons deck, or possibly out the front of the ship. In AZ's models, you could possibly have the tube coming out of the part of the ship right under the laser cannon. Since a torpedo is 20 m^3, I'd give it a 1.8m diameter and 10m length. Thus you'd need a launch tube about 2m in diameter. When launched, the torpedo leaves the ship, orients on it's target, and takes off on it's main engines.

For the rocket battery, I've always imagined something along the lines of the following: You have a turret that can swivel to launch the salvo of rockets and then returns to a home position (perpendicular to the hull of the ship and flush with it) where the back opens up and a new salvo is loaded from the ship. At that point it is free to move and track on targets again. So instead of the four launchers depicted in the image there would be only one.

I image the ICM launcher working the same way and that the ICM missiles are really a salvo of smaller missiles that launch out to intercept the incoming rockets/torpedoes/missiles. The entire system is smaller so it can move faster (less mass) and fire off as many ICM salvos as you want very, very quickly.

I like the laser battery in the image. The only difference is that I'd move it (and the ICM launcher) back to replace two of the rocket battery launchers. Where it is located, they are both somewhat masked by the hull of the ship from firing behind the frigate.

I'm definitely of the camp that for the rocket battery, torpedoes, seeker missiles, etc, you have a single launcher with multiple shots that require a reload. As depicted, there is no reason you couldn't fire all four rocket battery shots and both torpedoes in a single round. There have been discussions of that before and my personal interpretation of the rules is in the single launcher with multiple shots direction.

I've also always imagined the turrets more recessed into the ship, not sticking out as drawn. I recognize that there is a limit to the modeling available (without a lot of work) and as drawn they look great. The reason I've always assumed that they are more recessed is protection/security. If all your weapons are hanging out like that it makes them more vulnerable to attack/sabotage. A good hit on one of those exposed torpedoes and you could set it off right next to the hull. The same is true of the rocket batteries. If they are on the inside, on the other hand, at least the hull provides some protection. Anyway, just a though.

So all told, my modifications would be the following:
1) Scale down the battery weapons, probably to about 1/2 or more of their current size. They should be no more than about 5% of the ships length in size. You could go up to about 10% for artistic license but in reality, they are fairly small. A 40 m^3 weapon is only a box about 3m x 3m x 4m in size and on a ship that is 100m long that is only 4% of the length. And that's the "big" rocket battery, the LB and ICM launcher are half that size.
2) Remove all but one of the RB launchers leaving the one on top
3) Move the ICM launcher and LB back to take the place of the two RB launchers on the sides. Or if you want more symmetry in your design, put the LB on top and the RB and ICM launchers on the sides (lasers, top and bottom, rockets on the sides).
4) Remove the torpedoes from the top of the ship and add a launch tube on the bottom strut with the opening under the LC. It could even be canted somewhat inside the ship if necessary to avoid having the torpedo hitting the LC on the way out of the tube.
5) You could leave the LC as is or maybe shrink it's width and height a bit. I'd leave the length long, however, as you want the lasing cavity as long as possible to provide a tight collimated beam.

6) Finally, the arms on the rocket battery and ICM launcher need to be much longer. As drawn there is no way they can swivel up to shoot away from the ship. There is no clearance.

All told, however, I think the drawings are great and you could just leave them as they are.