So you take the name of the most badass fish in the sea and give it to what would be the wimpiest battleship ever?
The current Mako has the smallest battleship core available. Giving this something smaller would make it severely underpowered.
If the Bunters need anything, it's a heavy/medium battleship ship. Maybe something like the Liberty Dreadnaught but a little speedier while having the medium core.
On to the model:
I like the shape a lot and would definitely buy something like this because it looks like it was meant to DESTROY EVERYTHING.