I don't like how they got one ship class (not counting Keldon, which apparently was just a Galor mounted with a big-ass cloaking device, or the Hideki) for ten years' worth of appearances.
I actually think that fits their backstory, though. They don't have a lot of resources, so it makes sense for them to stick to a few tried-and-true designs rather than do a whole lot of retooling for a crazy variety of ship classes.
And on the design of the Galor--I love it. It reminds me of a manta ray...very elegant and deadly.