Yeah, I like he idea, but the more we build on top layer, the less can be copied. Take Nxt marketplace for example. If users were able to access a specific decentralized Nxt Marketplace (like a torrent) and be able to view and contribute to the market within their client, we would add immense unique value to Nxt, because that couldn't be copied or accessed outside of the Nxt network.
I think the importance here lies on "cannot be accessed". That's usually a bad thing, don't you think so?
Perhaps. But usually "can not be freely copied" is also a bad thing. Not so with crypto.