This was the closest flyby, 745 miles altitude, to reshape Cassini's orbit by atmospheric drag. Official Truth will metamorphose from Titan being a giant ball of hydrocarbon resources to a big rock decorated with some photolytic organic goo. Do not despair! All that carbon plus subduction and tectonics means... HUGE diamonds!
The very large (N-15)/(N-14) ratio demands progressive atmospheric stripping by radiation and solar wind over cosmic times. Lighter isotope N-14 would be favored to depart vs. the heavier isotope. We should then see an even more extreme depletion in methane (CH4 MW=16.04 vs. N2 at 28.01) and hydrogen, and especially huge deuterium/hydrogen and (C-13)/(C-12) ratios. We also wonder why we don't see any chemically combined nitrogen species like hydrogen cyanide (HCN), cyanogen (NCCN), and acetonitrile, H3CCN. They saw diacetylene HCC-CCH.
Where you have hydrogen cyanide photochemistry you have diaminomaleonitrile and an efficient adenine factory. If you have nucleotides you have life. Titan is inhabited by by diamond-hoarding potentates eager for first contact. Crash fundng must be allocated...