I love K2! It is really what Joomla needs. And I am really glad that it fast developing. Just one simple suggestion that could be a good add on in future version.

In catagory manager there is item ordering function in Category item layout which is set as "defualt". It is good idea as it helps to change item ordering in all sections just changing one parameter in "parameters". Those it could be a good option if parameters would include this option as well. feature is important for website which have hundreds of categories.