GAR Live lookback: mega-treaties – what are the implications?

Showing how much can change in the blink of a US presidential election, the liveliest panel at last year’s GAR Live BITs discussed “mega-treaties” - CETA, TTIP, etc. What lessons could be drawn from their content, both substance and process, and what would their effect be more generally? Would they release a bow-wave to wash over any number of pre-existing treaties?