I honestly don't see why their "window" can't stay open. The core is still pretty young in baseball years and reinforcements seem to be on the way in guys like Kiriloff, Larnach, Lewis, Duran, Balezovic, etc.. Berrios is only 26. The FO has shown an ability to build a bullpen and make shrewd moves (Maeda trade, signing PIneda while he was recovering from TJ, etc.). The Pohlads have shown a willingness to allow the FO to spend when they see fit (Donaldson, Cruz, Simmons, Colome, Berrios extension?). I think the next several years are going to be a lot of fun.