Main issue with the documentation was the rapid changes to the API in the past. Since the API is getting stable there will be more concern on improving the documentation.
I stand by my comment about the lack of documentation though. I appreciate that it’s often difficult to get people to contribute to docs over code, but it’s pretty imperative for a project like this that there’s at least an easy integration walkthrough and a handful of examples showing common customisations.
It should be noted that we plan to make the ui an optional part of Aloha (with default being a jqueryui implementation) to make it easier to integrate into existing systems. The heavy extjs dependency is part of why Aloha is so huge.
I also plan to look into using google closure compiler in ADVANCED_OPTIMIZATION mode to shrink the size to the absolute minimum.