Actually, I think Rheinland needs BCs more than Liberty does.. They use heavy-armor, heavy-firepower, flying bricks.. Thats what battlecruisers are. Exceptionally strong cruisers, which is exactly what the Military would use.
But if this were to be used as a Rheinland ship, it needs to be a bit more blocky. Look at the GB, Cr, and BS. All have shapr edges, and blocky images. Bretonians have flowing lines, Liberty has naval-like ships (if this is made Liberty instead, PLEASE replace the Liberty Assault Frigate with it), and Kusari has fin/dragon-like ships.