After playing on a largely naval map I feel like being able to build just anything willy nilly on water is starting to feel silly. I know it would probably cripple water spawns. But as it is it doesn't feel like water is an obstacle, or is different from land. It just becomes this bland, perfectly flat terrain that happens to be blue. I think it should be more limited what you can build on water. Of course this would mean disallowing water starts. All water planets would have to be supported from off planet and so on. But it would make naval a more interesting location. Maybe some base functions could actually be provided by large ships instead of silly floating structures. For example a carrier could replace an air factory and so forth.