This was added in our last release. You can now use metrics created in Ad Hoc in Reporst and Analytics and visa versa.

Great suggestion and we agree so we changed up the way metrics are organized in the last release (late last week) and it should make this a lot easier.

Great suggestion. We'll take a look. Continue to upvote this one. 

Great description of the problem. We'll look into it.

When you talk about segmenting on Calculated metrics. How are you thinking about it.Are you thinking about adding segments to calculated metrics (eg. Percent New Visitors [New visitors]/visitors)Or are you thinking about it as segments that say give me people that have a bounce rate of less than 50%

This is a great idea. Thought probably not exactly what you are looking for is that you can create segments through the API. There is a JSON (JavaScript Object Notation) version of the segment. This could be used to create a bunch of similar segments very quickly. You can make requests quickly throu...

Great idea. We'll take a deeper look at it.

Great Idea. Lets get this one voted up.

Great idea.