I like the concept. I'm very much behind creating smaller and more modular craft. There are only a few craft that really need to be big, mostly aircraft carriers, and we only need a handful of those.
My only real reservation about this particular design is the stability on rough seas.
Overall, this looks oddly like designs me and my friends conceived of in third grade. Even then we understood that traditional deck design in ships was a lame duck. Stealth could only be achieved with a more enclosed design, with the added benefit of extra crew protection and better aerodynamics as ship speeds increase.