btw. https://issues.jboss.org/browse/JBIDE-9787 for that bug.
Robert, if you still can't create a server with EAP 6 alpha then please open a bug report at https://jira.jboss.org/jira/browse/JBIDE with screenshots of what fails when you use File New Server.
ooooh - now I found the bug ;) the EAP server is for some reason not assignable as a runtime - like you just said, I just didn't grok it upfront. doh.
Created bug for that too: https://issues.jboss.org/browse/JBIDE-9788
But please be aware that both AS7 and EAP6 right now aren't really fully functional as runtime libraries since the module system aren't fully accesible to us (yet)