its useless to integrate the truecaller feature, i didnt find it useful...and the dialer UI is also changed...if you love the stock dialer then dont flash this feature. i had to wipe the whole device and install the ROM again to revert back to stock dialer. finally flash at ur own risk :p
All of those already available cm mod, expect true caller and email client
Correct me if am wrong but most of the apps and services are already there in CyanogenMod.
AudioFX, Cyanogen Account, Theme Chooser, Theme Store.
Only new thing will be In Built True Caller supported dialer. Gallery and Email are also already present in CM but these C-Apps may have extra features.