I am genuinely interested in the bullpen and how it does.... tbh, there was much of the same concern going into last season about the quality of the bullpen. Soto, Fulmer and Chafin were seen as solid, probably more than what they have now, but the rest of it was very much seen as questionable; Foley and Vest were still seen as unknown quantities, they had AAAA chaff Jacob Barnes on the Opening Day roster and Elvin "Gas Can" Rodriguez as well. And they managed to be OK, which is a credit to Fetter and staff but also a statement to the variability of relief pitching as well.
I don't know that the group will be as good this time around, but I do think their pen was so good last year that we forget how little confidence there was in the group going into last season as well.