I don't necessarily need to have better weight distribution. I didn't mean to give that impression to anyone. As a bigger guy, I do notice the uneven weight distribution more than the average 12lb biker. It seems to me that the back designs are very biased towards the front wheel. There's not as much weight on it, and even if there does come a big bump, I can just lift it over the obstacle.
I suppose I was more curious if anyone has considered this or read anything about it. It seems to me there would be many advantages to equal weight distribution, especially to us larger riders.