The OpenAjax Alliance has been working with some of the top Ajax developers on a wishlist that aims at gathering and prioritizing the development features that we need the most from next generation browsers. The process is completely open and Wiki-based...
For some reason, there is no standard API to get the pixel coordinates of a DOM element relative to the upper-left corner of the document. APIs only exist to get coordinates relative to the offset parent. Problem is, it's very important to get those coordinates...