I have gotten everything to work with my ppc-6700 more or less, aside from the things you mention.
I do believe I was able to get the incoming call dialog to pop up and pause the music ( I am using centrafuse I should mention) but am not able to get it to work now...
I have another phone issue though... not sure if you have the same thing, but I continually have to turn on bluetooth, as it somehow disconnects itself from time to time.
I really do not care too much about the messages, but I would like the incoming call dialog to pop up and pause the music.
I would also like to see about how to make my phones bluetooth stay on!!!