I dunno if it's just me or if some of the infected ships seem a bit "busy" in the infectionish stuff. If you chuck too much stuff on them, then they won't really look infected, rather than whole new ships. For example a ship from Homeworld Cataclysm in the spoiler:
I chose that because the concept of the infection is rather similar to the Beast in Cataclysm, an infectious plague that converts both ship-mass and biological material into more of itself. Of course, this all is opinion, the ships themselves do look great, I just think that for the interests of being a subversive infection, the ships should still retain quite an amount of their own features, as it will