Let's assume like a 8 guy bullpen.
So I could have like LRA (long reliever who would pitch when I'm still in the game), LRB (long reliever who would pitch when LRA is tired or when I'm down like 6-2 in the 5th), Mop-up who would pitch like the 7-8-9 when I'm down 8-4 in the 7th, SUA lefty specialist (low pitch count), SUA (normal pitch count like a very good 1 inning guy), SUA (usually would put as closer, best reliever who I'll try to get lots of appearances), SUB (solid reliever), SUB (another solid reliever)
Obviously all depends on the makeup of the bullpen but would these roles make sense if I had like 1 stud, 1 good reliever, 2 solid relievers, 1 massive lefty killer, 1 solid like 50 sta 35 dur guy, and 2 not exactly very good longer guys