It's pretty simple.
The Osiris design has some flaws and those are well known enough.
This is how the Corsair's are expanding on that design and making it better, while making it 'theirs'.
Leave out the battlecruiser, it lacks the design features of any known ship in Sirius right now except the old lunchbox, which was nuked.
The Battleship though, looks far better. It has the design elements of the Order and coupled with the newer 'corsair' front, it looks grand.
Just get the textures right and it's right as rain.
I got a problem D: I'm adjusting model's size to Bs size but after exporting it to CMP it have barbie-size in Hard CMP. And is here a good and simple way to adjust size of the model?
Adjust the scale slider to 1 or so.
Save the settings.
Cancel the export.
Export it again, loading the settings you saved.
It should scale properly 1:1 now.
If you just want to make the ship the size of a BS, import one into milkshape and compare it to your model, then re-scale it using the scale tool in Milkshape. Then export it as I said above.