This isn't event material whatsoever.
So, as it is being stated by everyone, a bunch of kids can take the X-Men. And it's not that they have recruited Valeria Richards, it just seems that the average people in the Marvel Universe have an IQ of 190. The impact this is supposed to have with the X-Men starts to feel very unjustified, and, unless Jason Aaron writes 2 of the best X-Men issues of all time (which I doubt) for the remainder of the series, we are starting off a new era of X-Men without a solid foundation. This, at best, should be a regular X-Men Legacy arc.
Acuña's art is nice as usual, sadly, if I wanted that, I'd buy a poster, I'm into comics for the storytelling. The script is solid, but the plot isn't worth it.