Sorry for spaghetti post but I'm gonna post .you thought on each of thse desgins.
I was thinking mainly about this one.
this works for a convoy escort. The two guns on the dreadlock it would be the ship's anti captial ship guns. For anti fighter guns there are a number of spots where turrets like those used on the Falcon would fit without ruining the lines of the ship.
Also the desgin would be great for pulling AC-130 duty by flying in atmo and doing fly bys because its biggiest gun is on the bottom hull in the front.
Frontal missle/torpedo tubes will let this be able to serve in true battles but it will always thrirve in patrol and escort roles
A good starting point for building larger warships. It suffers from the broadside issue I've brought up but it's still got better 3d coverage the most star wars ship's. Might also be a good starting point for developing a reputation for ships that can survive anything by using spaced armor and thick plating. Such armor schemes would be less common do to sheilds but in combo with them would be a huge advamtage for our stuff and warship are already big enough investments that better protection would be a selling point.
It's a light carrier, not much to be said. Though it might be a good idea to look at giving it some VLS cells for keeping hostile ship's at arms length while the crew works out a hyperspace jump to escape if things go pear shaped.
A cruiser (like a
Dreadnaught-class heavy cruiser)
Might out preform the dreadnaught actually. This ship is almost a great example of the center line doctrine I have been pushing. See the big guns along the center line? This ship can bring the majority of its guns to starboard or port rather then just half which is a huge advantage in star wars style battles. I also see lots of slots for missle bays and anti fighter emplacement.
All we need to do to make this desgin be a best seller is make it as reliable as the dreadnought class and need far less people.
A battle carrier (like a venator only with more weapons)
This might be an ISD 2 rivil that can carry a shitload of fighters. The Venator's desgin always gave it some durability issues that this won't have. If we do the spaced armor this ship will get a rep for being immortal.
Edit: evil idea time: spaced armor and Mon Cal style sheild systems. Our ships would be such. Pain in the ass to deal with as you have to batter down the sheild in a specific area then you need pin point accuracy to break though the armor and damage the Internals.
For those that don't know the Mon Calamari cruisers use a sheild a system where rather then just a big bubble the ship's sheilds are segmented so if you break a given segment you can only shoot at what was under that segment rather then just hammer the ship the moment the sheilds crack.