We are planning to add a fully-fledged address book sync (and also a web account too) in one of the next releases. As for rights management for address book records - that's also a good idea. We'll see what we can do in this respect.
UPDATE: We have simplified our licensing even more. Now if you purchase a commercial license you only need to choose a preferred pricing model: per operator or per remote PC. Program functionality is the same for both pricing models (i.e. full functionality of Remote Utilities).