I don't want to clean up my own old stufff.. Not now, at least.. maybe about 2 years from now , if I am in a good mood..

I can see where you might think that, and to be honest that sentiment is more applicable to the source of our tools - the stuff that doesn't get published - than the overall language and frameworks.

But for the product itself, but it's really more of "We cleaned up the majority of our own old stuff and the stuff we left had too high of a risk/return ratio and would have likely have much higher negative impacts on backwards compatibility had we touched it".