Keep Samsung apps/"features" after rooting? I know that if I root my samsung phone, I will lose a lot of Samsung features (like fingerprint scanner probably, and apps like S Note etc). And I understand that its the base that a rom is created on which determines if it can support things like that (I think?), but is there any way I can use a custom rom and still keep Samsung features, especially things like gestures and the customizations/settings screen from my S5? OR 'import' those features back in onto Cyanogenmod or something similar?

I want the best of both worlds, and can't seem to find any answers
Rooting your phone (standard rooting procedure; not from flashing a custom ROM) will not make you lose Samsung features. 

If you flash CyanogenMod (which is a custom ROM that also has root pre-installed), you will no longer be able to use Samsung's features. Samsung is Touchwhiz-based (TW), and CyanogenMod is AOSP-based. Apps developed only for TW-based ROMs are not compatible with AOSP-based ROMs.