Hi Felipe !
Glad you liked it ! We work hard for this
As for the security question, this is not implemented yet: https://issues.jboss.org/browse/FORGE-821
Do you think you could give it a try and implement it ? We really appreciate your help of any kind.
You can reach us anytime on IRC (irc.freenode.net) in #forge if you want it too.
There's also some work that's been started using client-side frameworks to integrate with server-side security. This works using the Aerogear scaffolding which has not yet been released.