Geekomon

Awful.
What's the criteria? If you like stuff like 08th MS team, and Giant Robo (only episode 4, 5, 6, and 7) then you prolly will hate GSD.

For one thing, the character designs are shoujo. Tall Lanky girly boys that screams "essence of hermaphrodite." Gundam designs that are half Gundam Wing, half Power Rangers. No military research or logical streamlining of the mechas. A lot of Gundams have a sort of internal logic to their design. The F-91 series were all inspired by Roman armor. The GP-X series was designed by a real engineer. The V series are tranformable and therefore, clonky looking but all the mechas were uniformly clonky.

In GSD, it's a hodgepodge of design themes and concepts. That's why the colors are so garish. I love to draw mecha. That's one of my hobbies. I even draw Gundam Wing and I don't even like Gundam Wing that much. GSD mechas are just--they don't make a bit of sense. Lots of vestigial parts that have no function.

/rant.

I should draw one of the GSD robots just to show you what I mean. Hold up.