We are glad to see that you are interested in using JustCode as your main development productivity tool. The post that Mark refers to is quite old and a lot of things have changed. I'd recommend you to give JustCode a try and see it for yourself whether it will work for your case.
I'm glad to tell you that in our latest release (Q3 2010) we support the vertical colored lines connecting curly braces. We call it Structural Highlighting so you don't have to worry about that - it's already in JustCode.
If you find anything missing as functionality, please don't hesitate to send your feedback to us. We are listening and always looking for improvements.
the Telerik team