We do have 10 years to develop this and it seems like we are entering an era of being able to shrink physical systems now (e.g. robots in the body). If you got enough energy it seems like we should have some hardy inflatable that could give you plenty of buoyancy once you landed. Even more ambitious of course would be to design it to be submersible as well. That would give you the capability to splash into one of the large lakes of Titan and not worry about sinking for a bit before rising. It would also give you the capability to sample at different depths which might be extremely valuable data that might answer the next set of questions on the same trip.

My philosophy is once you're going to spend the kind of money that is spent on these things, if spending a little more gives you exponential more data it is worth it. Of course, there is a limit to the complexity--violating the kiss principle can end in disaster. It will be a tough task because of its uniqueness and need to work first time every time.