Indeed. I quite honestly am willing to wait until after JWST for more interesting missions. JWST should bring forth a lot of good science in extrasolar planetology.
MSL... get it done and over with is my opinion. After MSL, perhaps it's time to take a break from Mars and go explore two more interesting worlds, Europa and Titan. Mars exploration doesn't really seem to have much of a defined goal after MSL, other then the futuristic idea of a sample return.
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Caps Lock: Cruise control for 'Cool'!