Wow, I want to play it already! If you need any help with the terrain, I would be glad to assist via Lightwave. You could also make the jump to make a "heightmap" sort of deal using Static Meshes in 227, but that would make your project not UT compatible and 227 only.
Yes, I wanna keep it strictly original Unreal compatible, for nostalgic reasons.
I could use any help for the basic terrain geometry.Here
are a lot of reference pictures including accurate sketches of each map:
Also here is whats supposed to be the original Myst Island heightmap, taken from the old making of video.
Not sure if that's the actual island appearing in the final game. The real island seems much longer and flat. The mountains are good.from here
But maybe you can work it out.
Btw: The island should be about 512x4800x3200, plus mountain another 800 or even 960 units big
*edit* this is a sloppy mockup with such heightmap.
Much too rugged and uneven. The proportions are off.
The source is extremely low quality. A new/optimized terrain seems absolutely crucial at this point.