Hello there!

The EU FanFest gave us a some nice infos.
There is however some things that I noticed that haven't been theorized about yet it seems, so here I go.

The first trailer shown us cerulean seas, and dense jungles.
The EU FanFest added notably Viper and a machine/human boss.

The main theory is that Djidane is the inspiration for the job.
However there is another SE character that fits the twinblade/paddle : Serge.

If we think about it that way, some things seems to converge :
-the aforementioned character
-the name Viper has an important signification in Chrono Cross
-the setting with navigation and jungles also fits with the aesthetic
-the boss may means something too...

This may be coincidences, but I felt this may be something deserving a thread XD