Meshes are always a problem. I'd play the Maelstrom mod for Diplomacy, see if his titan could work, but you might want to try and help him out first before you get permission. There maybe a couple of other mods that added titans in Diplomacy.

And where are you finding all of these great meshes for everything else?

also.....

is there a reason the Rebel Loyalist mesh is missing 2 turret hardpoints?

it has

    Point
        DataString "Weapon-1"
        Position [ -425.207336 -439.296326 -195.125015 ]
        Orientation
             [ -1.000000 0.000000 -0.000000 ]
             [ 0.000000 1.000000 -0.000000 ]
             [ 0.000000 -0.000000 -1.000000 ]
    Point
        DataString "Weapon-1"
        Position [ -437.968536 -409.882446 -169.679016 ]
        Orientation
             [ -1.000000 0.000000 -0.000000 ]
             [ 0.000000 1.000000 -0.000000 ]
             [ 0.000000 -0.000000 -1.000000 ]

2x turrets on the back right.... Leg that face backwards

but on the left "leg" there is nothing?

Every other... turret is symmetrical!

is    

   Point
        DataString "Weapon-1"
        Position [ 425.207336 -439.296326 -195.125015 ]
        Orientation
             [ -1.000000 0.000000 -0.000000 ]
             [ 0.000000 1.000000 -0.000000 ]
             [ 0.000000 -0.000000 -1.000000 ]
    Point
        DataString "Weapon-1"
        Position [ 437.968536 -409.882446 -169.679016 ]
        Orientation
             [ -1.000000 0.000000 -0.000000 ]
             [ 0.000000 1.000000 -0.000000 ]
             [ 0.000000 -0.000000 -1.000000 ]

so hard?

MUST HAVE SYMMETRY!

this brings it from 18 turrets to 20

Point defense

 8 front 4 right 4 left 4 back

slight oversight by ironclad? or...   will my game now Explode when the titan is surrounded?

and a slight bump...

is there and Easy and simple way to change the Mottled dimpled texture (on advent titans) back to the reflective shine that all other advent ships/structures use?