Compared to last year, almost anything would be an improvement for the Kansas City Royals bullpen.
In fact, I believe the bullpen improved the moment Brandon Maurer, Justin Grimm, Blaine Boyer and Burch Smith were off the team. This group accounted for 181 hits and 141 runs in 143.2 innings.
To be fair, the Kansas City Royals would probably have released or returned all of them during the season if they had been in contention. Mostly these bodies were here to be traded for controllable prospects except for Smith.