Could be fun, though unlike SAO instant timeskips are a bad idea. SAO missed one of the most important aspects that could have turned their 2D cardboard character archetypes known as people into actual characters if it had shown the process of people getting used to the world. After all, being suddenly put into a life or death situation as well as the fact that that world had no leaders was important. Seeing the rise of the factions, leaders, and characters would have made it better rather than a time skip and you just have to believe all of those people are important one way or another.