The managed bean issued is the one discussed in my third post on http://community.jboss.org/thread/157565?tstart=0 -- JIRA for that is https://jira.jboss.org/browse/JBAS-8518
The remotable deployment API is in progress. I'm focusing on domain wide deployments. If someone has some cycles to work on making the standalone deployment API remotable, a lot of pieces are there to serve as a base; John Bailey and I could walk you through it. Otherwise I'll look at it Thursday.
The domain/deployments dir is not a hot deployment directory. We should probably rename it. It's the equivalent to standalone/data/deployments. There is no filesystem based hot deploy to the domain.
Can you file a JIRA on the .DS_Store problem? Or just fix it (have the scanner ignore it)?
I haven't been able to reproduce your issue with deleting .deployed. I haven't tried using your maven module though; just manually. Does it happen it you do things manually?