I think a feature with easy to understand texts for beginners would be nice. It helps memorizing new vocabulary in a better way than those multiple-choice questions.
But "kana only" texts are somehow difficult to read. And since this site provides furigana, kanji shouldn't be so much of a problem, I think.^^'
i agree with skamlic... for a beginner like myself who's not that familiar with hiragana and katakana yet... maybe a story written in H &K will help me a lot to improve my reading skill...