That will take some effort but we'll try all we can so that this feature is available in the version 5.2. I agree with you that it's very handy to print something out from the remote PC to the local printer once in a while.
This is a bit tricky given that Dropbox or Box.net already exist that do the sync task perfectly. The File Transfer mode was primarily intended for occasional file transfers, not as a full-fledged sync tool, as this is much better done by specialized software or cloud services. But we'll see what we can do.
Update on this issue: The License Key Storage and the program's Enter license key dialog are now much safer. It's impossible to copy/steal the license key directly neither from the License Key Storage, nor from the Enter license key dialog.
So far, in version 5.1 we implemented mass connection properties editing.
In order to mass edit connections, select them by dragging the mouse pointer around them or using <Ctrl> or <Shift> + click, and then right click and select Properties just as you do when edit a single connection.