The problem with your line of thinking, is this year we are going all in for a ring this year.
I know we aren't really ready yet, but we are.
After this year we will be shedding a bunch of older guy salaries and need to replace so many guys it's almost impossible (right now) to see how 2017 won't be a step backwards from what we expect 2016 to be.
It all starts with the QB and I can't imagine anybody expects a 35 YO Fitz to be our starter going into 2017. Then you account for Brick, Mangold, Harris, Revis, Gilchrist, Marshall, Wilkerson/Richardson all being guys that could conceivably not be on the 2017 roster, and it's easy to see why we are trying to hang onto everyone for this year to try and go all in and try to get some breaks.