My last gig, on call worked well, I thought, for a few reasons: it was our services that we wrote, it was 1 wk out of 6 that you were on call, we heavily prioritized fixing unactionable alerts and automating fixes -- every alert had a runbook entry that described the non-automated fixes, and while on call your or sprint commitments were not counted,

That last point was very nice as it meant you could work on whatever you felt was most important for quality of life improvements all week long while not fielding on call issues. This meant that I looked forward to on call.