From the current "useful" teasers that have been released, this is what I came up with. Now, for the following, I assumed that the time period was set after Jesus' birth around 0AD.

Teaser #2 Seven and Three are important numbers. In the bible, both of these numbers are important and used frequently. The number 3 itself is referenced 467 times in the bible, with an example being the trinity. the number 7 is referenced 735 times. (Both facts are from bible study.org)

Teaser #3 There will be no stabbing of pigs Sacrificing of pigs was a pagan practice, and if the people in the game were to start practicing Christianity, then there would be no stabbing of pigs.

Teaser #4 Terrain truly matters This could be said about most paradox grand strategy games, but nothing resounds louder than the wars of ancient times. A lot of people on the forums commented that this would be "Rome 2" due to the idea that terrain mattered the most in ancient times.

Teaser #6 Elections and Technology are important parts of this game Wait, the roman republic fell in 27 BC, how could elections be important? Well, my only comment on this issue is that perhaps this means that the game will take place during the fall of the roman empire. This is a bit of a stretch, but the most of the theories we've come up with have been stretches. It's a new IP, so we could possibly see a mix between CK family mechanics alongside EU nation control. Technological advance could be said to be important in most eras, with the example being HoI and trying to research newer and better war machines.

All in all, this is just a theory This is simply a knee jerk reaction to this mod, so this could possibly be a tinfoil hat idea.