I think it's about time for POW to "grow up" and become more than what it currently it by going open source. For version 5, I have been working towards this goal. While I've wanted to go open source for awhile now, the way POW is structured is unsuitable for public involvement, due to how messy and amateur it is. It is the byproduct of a learning experience.
As I've been working on that new game I mentioned a few posts ago, I've learned the joys of programming in a more proper method, and now, coming back to work on POW, it's irritating. So, ever since releasing 4.4.11, I've been working on rewriting POW into hierarchical, encapsulated/modular code structure (which, btw, might have the side-effect of correcting a few troublesome bugs that are a consequence of the way things currently work).
The coding process could take awhile, and I wouldn't expect any art news for the next month. And I'd be curious to know if anyone here would be seriously interested in getting involved with the open source version of POW once it's ready. Leave a comment ;)