This is sort of why I really like having smaller cases. I'd rather be creative about keeping things tidy and clean in a small build. And I don't have a whole lot of room for a giant full tower in my room.
I don't see any kind of crash happening any time soon. This is a multi billion dollar industry and there's enough competition between Microsoft and Sony. And the world we live in goes by so fast that there's no time for a crash.
I have the nuud version and I use it underwater all the time. I've taken it to 6 feet underwater no problem. I'd say make sure the O ring is put on correctly because if it is just a little moved it will let in water. But the nuud version is perfectly safe