[X] Improve Annual Festival (-2 Econ, +1 Stability, +1 Art chance for additional effects)
[X] Build boats to counter them (-2 Econ, +1 Econ and +1 Diplo next turn, other potential effects)
[X] Breed it
[X] Yes (Trade step farming for chinampas)
Still catching up, but I'm good to vote. Sacrifice it is going to synergize with Grand Offering and result in a very wasteful trait. I'd reather get an animal husbandry trait myself.
Festival as we don't need wine coming into play during a generational study. Stupid is bound to happen.
I'm picking Build Boats for both the mocking their silly 'war' attempts and the thing no one else has noticed as of page 1584, post #39600... Chinampas are floating farms. This means they must hold lots of weight.... I'm pretty sure those are bigger than the current generation of small sailboats. They are going to give us a boat building tech and don't know it.