Sure they have added some new things lately but none of them are compulsory, you don't have to touch them. The core game is still just as good if not better in my opinion. Particularly where the internet is concerned, thanks to the global trade station and pokebank I finally got all 718 pokemon in X!
I stopped watching the anime along time ago, maybe I should try and get them on DVD? I am a fan of videogame music, my favourite pokemon ones are probably petalburg and slateport.