We can almost make one now, come to think of it. I've been tossing this idea around a little - with the way that Paul created the canyons in Mars Station, you could do the same thing with a few other terrain types, you just need the side pieces:

Arena Works - desert
Village Works - grasslands
Skull Cove - mountains, jungle
etc

I would love to see an integrated terrain pack, though. I think that could really be a big seller - there are a LOT of different gamer-types (RPG, skirmish, wargames, etc) that would be interested in a set like that.

Terrain pack(s) would be great! I've been tossing around the idea of creating a jungle/delta set for personal use. (I'm a big Vietnam buff)

I'd also like to see just about every other type of terrain, since the outdoors are great! I'm sure a generic European-y woods-y set would go over well, especially with fantasy folks.

Hmm... pull together all the existing terrain tiles from the various WWG sets, then add 4-5 transition tiles (grassland to jungle etc). Could work...

Yeah, certainly bashable. I was thinking doing it from scratch... but there are already rivers in VW, grasslands in BoM, and jungle-y bits in Skull Cove...

Oh, I wasn't suggesting to "bash" together a terrain set. But I do think this is something Denny & Co could easily put together from existing material, with a fairly small amount of additional effort.

Yes! Bring on the terrain!