I like to split the Jays pen into three distinct phases. In April the pen was fantastic, as it ranked 3rd in ERA, 8th in FIP, and 13th by SIERA. There were far too many innings to cover as the rotation struggled a ton to start the season, and once injuries became an issue the pen proceeded to perform very poorly for the months of May and June. ERA dropped to 20th in MLB, FIP down to 21st, SIERA to 21st.
The Cimber and Richards acquisition definitely helped to solidify the pen as it gave Montoyo two more relievers that he could actually trust in a tight game. Prior to these trades it was basically just two guys that could be depended on to hold leads in Romano and Mayza. Surprisingly enough though the Jays bullpen numbers for the season as a whole are actually better than what the team produced after the trade deadline. The front office had a swing and a miss in a few of the deadline acquisitions as both Hand and Soria really struggled in Jays uniforms.
Just how good or bad the Jays bullpen was after the trade deadline depends largely on which set of numbers you examine. When you look at ERA the Jays pen ranked 17th, so pretty much middle of the pack. FIP looks pretty bad as the team ranked 25th, which looks to be largely due to an excessive amount of home runs allowed, where the team ranked as 4th worst in MLB. The amount of damage the bullpen struggles could cause was largely mitigated due to the starters really rolling in the second half as the bullpen only needed to cover 255 innings, lowest in MLB.
I do still like this pen's chance to be at least solid, but much of this will depend on the performance of the starters. This shouldn't be a huge issue given the expected quality of the rotation but as we saw in 2021 a solid bullpen can quickly become well below average with overuse and when the inevitable injuries start to occur.