This anime is one of those amines I feel that had a great idea, but did the process wrong. I believe they shouldn't have done some fighting scenes like they were (makes some fight scenes in SAO that I personally didn't like seem a bit better), and slowed the pace at certain parts of the anime. I find myself not able to be engulfed into the anime at certain parts of the anime. The story is a good, reused plot, but I like how they made the school arc really fit into the plot of the anime.
The anime is a good anime and has good ideas, I just recommend to slow down and not make the fights stale, but more exciting and so that we can feel the action somewhat. For season 2, slowing down can help us be engulfed into the plot of the anime, but do not make it too slow where you will make us fall asleep. The fighting should be more intense and the MC should take more damage then the other people around him (to make the action more intense, because seemly the process of 'Overpowered MC' does not look good with this type of anime). I know that this is a manga adaptation, but most common mistakes is how the anime should be paced and the execution, so I usually watch manga adaptations with medium expectations (my expectations for a decent manga to anime adaptation is a good story, plot is understandable, evident for what the studio is trying to do with the anime (if they want to make it so the viewers are engulfed at first and then making the pace a bit faster, start fast at first then slow down, etc) and art that doesn't seem rushed).
**This is only my OPINION so please do not get offended if you believe the opposite of what I said, but I do share with the knowledge that people have different beliefs**
