Both Galactica and The Black Hole gained extra funding and had their production designs changed after Star Wars.
The Black Hole before Star Wars was a very different looking film with a very different tone before R2D2 and C3PO became the big hit that they did.
Watching the film when it came out it certainly felt like a Star Wars rip-off.
Now I'm struck by how Maximilian resembles a certain cyborg general (only more cool).