I do believe the window for winning another championship has closed but I also believe it could be re-opened very quickly in this off-season if the right moves are made. This team desperately needs a legitimate corner. Look at the Cardinals defense and what it has become since the arrival of Patrick Peterson. He has completely change the entire dynamic of that team/defense.
Troy, Woodley, Ziggy, Heyward, Harrison, and Clark are enough to build around. However, Taylor, Hampton, Keisel, Foote, and Timmons are becoming non-factors and in the case of Taylor and Foote are liabilities. Worilds and Carter are nothing more than bodies. Neither one has shown anything that would reflect any positive return.
A blue chip corner and a legit inside run stuffing LB is a major priority for this team if it wants to win another championship.