This is ultimately good news for everybody. Even those that purchase later will get the benefit of whatever mods people make.
Personally, I'd consider doing some writing if there are other people around here interested in doing some of the other bits of creating the mod.
I know nothing about modding, nor would my computer probably be able to handle it (nVidia 7600). But you could probably team up with other people here, on the W2 forums, or someplace else. Hope it works out!
We'll see, I'm also somewhat tempted to do my own text adventure game. I could do it, but the amount of effort to QA the parser commands would make it tough. That being said, I'm sure there's enough people around to beta test a freeware text adventure game here to make it work out.