When I attended the Mormon Stories conference in NYC, in conjunction with the opening weekend of The Book of Mormon musical, John Dehlin asked how the LDS Church could be reformed in such as way as to maintain membership rates, but not decrease current tithing funds.
I took a stab at this question a few months ago here on my blog.
However, someone recently made a video in answer to the same question that John posed. I think his video response (below) is much better than my own attempt.
Lots of good ideas. If the Church made the changes, it could prevent many people like me from walking away. Here's the video: