Sword Art Offline didn't seem to add anything; I felt that if you watched it or didn't watch it, you're not missing out on anything (action-wise or information-wise). For animated chibis, they displayed a very limited range of emotions (most of the time it's just blushing); they're chibis, they're supposed to be over the top in my opinion. Plus, too much useless fanservice and tsundereness that I find plain annoying. The attempted humour falls flat, and everything that happens is extremely predictable. The segment that I did enjoy was the trivia corner because it wasn' something that was necessarily repeated information - usually it was something newthat you wouldn't get from just watching the series lightly.