I feel like their time should be spent on more important things on the site first, however I'm not opposed to a d2jsp app either. A lot of people would use it.
On another hand, it would most likely have the same exact layout as if you opened up jsp on mobile browser so in one perspective, it's extremely useless.

I jsp from the phone every day - from mobile browser. Set up exactly if you were to use it on a computer

what benefits do you see coming from the time spent when they can do as I said above ^ ?
just curious if I'm missing something entirely in terms of convenience or whatever other reason you might use the app instead.