I really like XDK IDE but one thing frustrateds me. If you had a document open, switch to another and want to go back you have always to select this document from the tree. If you Project gets bigger and is devided into several files it takes to much time to switch.
Here a tab bar on top would be nice that just Shows the opened documents with a close Icon to select the onc I don´t need in the Moment. Like in every other IDE or Editor :)
BTW: This site really buggs in EDGE browser ;)