You cant see here the fun I had in After Effects creating a short text-centric intro that is intended to kick things off, giving a little exposition regarding the world, the maps and the journey. Video of that to come soon.
Here are a few screenshots of where things are upto in Unity. Being stills they are a little static feeling obviously, but just imagine the maps flowing along with the grass and various sound elements playing around the scene.

Pretty much every step along they way required exploration, testing, scripting and initial torture followed by joy on success. Here are some of the things I have working/done now.

Maya rigged map created and imported as Unity asset (using FBX).
Flowing animation for the map also brought across.
Script to randomly wobble a map.
Prefab of a map with various scripts – one allowing a chosen map texture to be applied.
All new map placements across the environment.
Landscape and grass enhancements.
Heartbeat audio at drop points.
Array of various wind audio elements placed where the player may walk.
Placeholder elements for holding concept art with attached audio.
Script to manage under-map audio based on player elevation.
Grassy footsteps playing when moving.
Fade in to environment from black GUI

Things I cant do because they are Pro version only things (cant do yet at least): movie playback; shadows beneath the maps (dynamic).

The TODO list in the short term looks something like this:
Make a trailer from the current landscape and cinematic intro.
Add GUI/overlay map & compass elements.
Update the Project Plan and destiny.
Create deep-maps audio elements.
Create ‘darker feel’ below the maps (GUI if necessary).
Create concept art monuments for the Cloak Priests, Skep and the flyer.
Create animated sketch placards.
Import the concept sketches (animated GIFs or multi-textures also).
Create a Skep audio theme.
Animated Skybox.
Create published version of realtime environment.
Rebuild the grass, add several trees.
Different footsteps for ‘on maps’ & fix downhill errors.