LOL CM is the same as AOSP the whole point is to remove everything samsung. I can provide the launcher and it may even work but all other gs3 features will be lost for good on CM and AOSP roms.
If you want an aosp or cm rom with all the gs3 features such as palm swipe for screen shot, motion settings, all share, smart rotation and smart stay It will NEVER HAPPEN and yes your dream ROM IS DEAD. If you just want the TW launcher I will provide a zip for you. Let me know if that is what you want and I will try and put it together for you. I just don't think the launch alone is what you want and that's pretty much all you can get.
You can get a touchwiz rom that has the stock AOSP messaging app added. TW Roms will let you add many AOSP apps but AOSP and CW won't add TW features. So it is possible if you start with a touch Wiz rom as a base and add ASOP Features but not the other way around.
What ASOP / CM Apps would you like added to touch wiz rom.
I am talking about apps here . NOT menu settings / features this is not possible.
Tw ui for cm 10.1 on gs3 would be awesome
I really like tw but also want to have new android 4.2 features
It's a shame cm doesn't Support multi window and other s3 features but thanks to siyah i can use 2 roms at the same time
So what file do you want to make? Hope app drawer also will be as on gs3 tw.
Or you could just download a touchwiz 5 theme from the play store and apply it in theme chooser. A good one will theme the stock dialer/message as well. Problem solved? - If your on an aosp ROM.
For launcher download apex/nova and a touchwiz 5 theme for them, then apply it. Again problem solved