Guess il post here since its really crems model.
Ive been adapting one of his models to a CA missile destroyer. Its is armed with a single banisher-type rocket, and a dedicated AA missile launcher.
Here is the model im basing it on.
The problems with using this model as-is are severalfold mostly because it doesnt have the right weapons. Ive adapted the rear vlaunch rocket pod into a horizontal arcing missile and the forward gun into an AA launcher.
The problem with this is that the central tower is too tall for the missile to shoot over. So ive raised the rear rocket launcher, lowered the central piece, or both.
In the course of this ive also made it shorter, since units that are longer than they are wide arent really supported in spring and really long units will look silly and clip etc.
So here are my designs.
First versions, with one of the central towers basically cut out and a lot of the stuff underneath removed.
Not as tall, more minimalistic, keeping the 3-segmented hull. Shaved the top off the central piece
Most recent version, with more extensive work on re-modelling the rear to be taller. Had to remove the 3 segmented hull system to incorporate the rear and centr more. Gave it an open missile bay (for easier rotation etc).
Thoughts/suggestions? Which design elements to people prefer from which version?
I could change the way the missile destroyer workers, making the missile fire directly upwards and thus keeping the central column, but... it might look kinda odd.
It loses the cool "dual barrel look" of the old model, but the ship is slow firing, so i guess it works. 
