Providing an easy-to-use interface is the job of D-Bus client libraries, not the protocol itself. Client libraries are still a wild frontier, not at all settled.
I thought sd-bus was considered a good D-Bus client library? Haven't had the need to try it out myself, but the name has been popping up recently when dbus has been discussed.
ITts a lot better. I've ported libdbus-1 code to sd-bus and in practise I saw 100s of lines are replaced by about 20, with better error reporting on top of it.
