I agree that communication is an important aspect of maintainership. Not responding to PRs for a long period of time is bad because it lets people wonder if anything is being done about it at all. That can be quite frustrating as I know from my own experience. That said, Carter's critique of the proposed API (the classes) looks valid to me. I understand that coming up with a better API design that accommodates all the cool permormance improvements may take its time. @Carter: why don't you try to eleborate your critique of the proposed API on the tracker and present a rough sketch of where you think things should go instead. Then you guys can all work together to flesh this out. My experience is that writing things down helps a lot to get them clearer in my head. If the side effect is people feel that their contributions are respected and actually worked on, so much the better. Cheers Ben