ATC addons: the state of the art

I do not want to open a long discussion on what ATC is better. Each has its pros and cons. But one thing that is still unsurpassed in ATC default FS2004/FSX, in my opinion, is the quality of the voices and the realism.

Now, since it is going to be released P3D 2.0, and then the ATC source code is available for LM developers, do you think could be finally developed a good default ATC with SID / STARs and AIRAC upgradeable, and with a voice quality equal or superior to that which we know?

I can not fly always online, rather are less the times I can do it, so I think it is essential to have a complete ATC environment, with a good and realistic sound quality.

That could handle properly AI traffic on ground, enroute and during approach and final phase of flight, could save the situation, could handle SID and STARs and is aligned with AIRAC.

Yes, you'll think, that's allready exist, but the quality of audio? None ATC addons I know have the same audio realism of FS2004/FSX default or not?

A rock solid default ATC  saves you from having to run third-party programs that often block or otherwise crash your sim or causes various problems.

What do you think about?