since the same features (smart stay, etc) work even when using a custom launcher i am assuming it's NOT part of TouchWiz since you wouldn't even be using it. i am just suggesting the features, like SVoice and S-Notes, might be separate APKs. i never used them so i never cared to back them up.
Samsung Galaxy Precedent (rooted, AreaRom 3.4 , sd-ext w/ 3.65GB internal space)
Kindle Fire (1st Gen, rooted, AOKP JB 4.1, Nova Launcher)
Samsung Galaxy SIII 4G LTE (rooted, Carbon ROM)