Most of them are canon designs.
Yeah, but they found ways to make them so goddamn fugly... they darkened the colors, added absolutely godawful striping to the Galaxy-Class, gave red and blue engine lights to ships that never had them, like the TOS Connie, and some of the other ships just look plain awful.
Look, I'm sorry... as i said, the environments looks awesome, the uniforms are cool, and the aliens look great. I'm not slamming the play of the game. I'm just saying that for ME, the Fed ships look way too dark and just plain ugly in this game.