Core decks vs extensive reading

I just tried out VNR and just wanted to add that if you disable furigana, the popup dictionary function goes away. So you have to keep the furigana on, but you can disable text-to-speech, grammar notes, translations, translated subtitles, and you don't need to use AppLocale. The game I tried won't run from the springboard (perhaps because I didn't install the AppLocale, I already had a separate location emulator), but I can just run the game from the file location while VNR is open and it will work.