Looks like NASA may be dragged into it kicking and screaming. It may be time to change some people at the top. There's no point having this kind of a mission if leadership doesn't believe in it.
NASA has a very hard time devoting resources to planetary science and exploration programs when key legislators continue to earmark NASA'S budget for (what are essentially) jobs programs in their own districts. SLS has shaped up to be a perfect example of that.
No magnetic field either, so tethers for orbital adjustment are out to. And it's flying out to one of the more radiation hard environments in the solar system, where we have very little data on what exactly it'll experience.
And it's going to be a long long way a way. 1 hour signal round-trip time.
[1] http://www.examiner.com/article/nasa-s-bolden-no-american-le...
[2] http://usatoday30.usatoday.com/tech/science/space/story/2012...
Curiosity was a huge hit with the public, and although I'm not totally sure of this, I'm of the belief that it was a great success for NASA in a variety of ways.
I'm sure they'd be more than excited to have the funding for another probe.
And I admit, this is an extremely naive viewpoint with little more than my own excitement for such a mission (however shallow) and my intuitions about the nature of the scientists who work at NASA. I could be totally wrong.