Anything NXT can do, Open-Transactions can do using Bitcoin (or any other curency) as its basis, without requiring any kind of special token.
We know they are the project that is actually trying to solve real problems instead of P&D their appcoin, because they don't have an appcoin.
Also the fact that so many people flock to the appcoin P&D platforms instead of OT shows how much they are interested in solving real problem.