Nuclear powered blimp....
Perfect vehicle for exploring Titan.
I'd say the set of images we got is perfect to whet our appetites for another mission: tremendously interesting, but still tremendously enigmatic. If the chemistry results are half as interesting, I suspect we'll have a LOT of questions left to ask Titan after Huygens' data are digested.
An interesting question is, will we see things so compelling that Titan moves up there with follow-on Europa exploration as a priority. My Zeppelin-to-Saturn probably is less challenging than exploring Europa's 10km underground ocean, after all.