I don't like it when they do that. Years ago I tried to follow the first Onslaught run. I have a nearly full long box and the story is far from complete.
I finally finished the run of Secret Empire and it's tie-ins. It's nearly an entire short-box and that's without the aftermath books.
Dude, I swore after getting every tie-in for Infinity Gauntlet that I would never do that again. I ended up doing it again for Knightfall and for No Man's Land. But I am lucky to say I haven't since.