I dont count on Amaya for much of anything. With him or not, the Cubs will still need a catcher, preferably one that can be relied upon to carry most of the load.
Busch, Swanson, and PCA are the only positions players absolutely locked into a spot. Everything else is a big question mark. I have faith Shaw can be a guy that can at the very least give you close, if not equal, performance to what Hoerner gives you at 2B.
But then plugging in a whole bunch of meh level rookies into 3B, LF, RF, DH, and whatever you decide to do at C and expecting them all to perform at the level of the veterans they replaced sounds like the absolutely dumbest expectations to go in with.