I think a vex raid would have been nice yes, but the idea behind raid layers is to not run dry of raid content, creating "raid" takes more than a few months unfortunately, we saw that with crotas end. so I think if they keep up the raid lairs and make one good raid a year, and then continue to add raid lairs, it helps the content be good while fresh at the same time. But of course I would have loved to have seen a raid, but preferably a good one at that.