Titan exploration beyond Cassini Options

[titanicrivers]

Beyond Cassini
Two proposed future Titan missions to be presented at the 2017 LPSC conference http://www.hou.usra.edu/meetings/lpsc2017/pdf/1958.pdf and http://www.hou.usra.edu/meetings/lpsc2017/pdf/2306.pdf
promise to extend and enhance Cassini’s discoveries concerning this marvelous world.

[TheAnt]

I really like the Dragonfly proposal, but I am afraid the chance of seeing it happen is very small indeed.
It's similar to the drones most of us are familiar with now.
Now constructing a multipropeller drone that will have to function in that temperature range and environment is both difficult and risky in several ways.
Some metals have brittle 'ductile-to-brittle-transition'. and what substance to use as lubricant in the bearings?
(Copper might be used in wiring and bearings though - if I remember correctly it's a metal that don't have the BDT transition.)
Anyway I think NASA and ESA are a bit to risk aware to seriously consider this one, and for the other agencies, it's outside their capability.