No, the answer was to get one of the more consistently good relievers of the past 5+ years, and to rescue an undervalued reliever that took basically one week to be excellent(Almonte after the first 2 series/3 appearances of the season: 13.2 IP, 4 H, 2 ER, 19/5 K/BB, 0 HR).
But most of all, the answer is "you cannot offseason your way out of 4 starters and 5 relievers getting hurt more or less simultaneously". Not every negative thing that happens is an avoidable failure.