I would really like to see support for authentication by keepass much like the keepass firefox plugin, etc. Keepass I personally think is one of the most used password managers.
If you are not able to support this without a large amount of work, would it be possible for the "mRemoteNG.exe" execute parameters to allow user and password? Thus I am able to use keepass URL to execute mRemoteNG for each session.
KeePass Password Safe