You don't do it on all of your books--is it just the Shadowline titles?--but you do it often enough to tick me off.
Maybe it's just me, but I don't think that it's a good tactic to put a full-page spoil of the reveal for the current issue's final panel ON ONE OF THE FLIPPING COVERS where it often can't be avoided.
Put them on the inside in the back, where I'm less likely to be spoiled unnecessarily.
Thank you.