Does it really matter if the terrain is right? I mean if the town itself is inaccurate then that kinda defeats the purpose of having it. If I knew how to piece them together I'd give it a shot, which I might. I don't think it's a huge deal, but it's good to at least having something up to date.
I'll go through adding updated maps over time. I do have the original sceenshot pieces and can put together towns for S1.
For Embry Crossroads the terrain is mostly the same. It's jsut a few building along the center that have been changed. For Boneclaw, there are some more major changes. The biggest being the bridge no longer exists across the quarry. But it's not too big a deal at the moment.