I'm currently in beta-testing mode. I was doing horrible on build D, but my villagers have continued to thrive on Build E (hence Isle E).

I've noticed a few behaviors that did not exist in my prior Isles on the big island of Isola.

My villagers in Build E are very nice at "Honoring the Dead". I think that's very sweet of them to do. My villagers also like to do the following:

"Chatting"
"Telling a Joke"
"Telling a Story"
"Arguing"
"Praising"
"Honoring the Idol"

Of course, my villagers do the usual:
"Exercising"
"Laundry"
"Complaining"

I also noticed that my villagers on Isle E tend to get sick a lot easier than on Isle Uno or Dos. Also I've got some really "slow" villagers, who can't ever learn how to "research" or "farm/fish" if their lives depended on it!

It's just so interesting how different each of the isles can be.

Tech Strategy for Isle E

Since it's a new isle, I changed my tech upgrading strategy:

Harvesting - Level 2 (need it to feed villagers)
Building - Level 2 (need it to build huts)
Science - Level 2
Spirituality - Level 2 (which I ended up regretting, because I didn't need to upgrade this so early in the game. You only need to upgrade to Level 2 when your villagers begin passing away)
Medicine - Level 2 (need it to extend life of villagers)
Harvesting - Level 3 (need it to have more food for more villagers)
Building - Level 3 (need it to solve Puzzle #8)
Spirituality - Level 3 (need it to solve Puzzle #9)
Fertilility - Level 3 (need it to solve Puzzle #10)
Medicine - Level 3 (need it to extend life of villagers again. Hang in there my aging Master Builder!!!)
Science - Level 3 (well I have to in order to solve Puzzle #12. ALL techs must be at level 3 in order to solve Puzzle #12)