I've seen this pop up in HN a couple of times and was really impressed. A couple of weeks ago I found it in kickstarter, learned you would share the code and was AMAZED by the "digging" feature. I contributed with some money, and some more yesterday after your appeal.
While I don't have big hopes for the game (sorry), I think the tech is really cool. I'm eagerly waiting for more news, and a build to play around with.
The game ideas were, and still are, quite vague, but I am taking community input and reshaping it dramatically around what they think is important and what is not (not giving away full control of the game, but carefully weighing all criticism). My KS campaign never got to the point of reflecting that because I've been so busy with everything else (coding, managing the forums, twitter, etc). :)
That said, I do one day hope to have an interesting game in there, even if it is not up to par with what modders have created.
There's no reason why, with as much time as you're putting into the coding, that the game play aspects couldn't be just as interesting.