Hello Andy,
yes Heliborne looks real amazing! I have bought it on Steam and most of the DLC's too, but I had not much time to look at it, only a short test.
Sadly it has only a very basic cockpit (only a HUD) and its more arcade like. As far as I remember someone of the development-team from Heliborne had asked here in the forum something about how the dynamic campaign of EECH works. Maybe we can get in contact with those guys for a future helicopter simulation with the graphics and the terrain from Heliborne and the realism of EECH. I know that unfortunately this will probably never happen, but it would be a dream
!