Is Service Level or ASA still the key metrics to measure success?

I would like to pose this question and get other people’s thoughts. With newer technology in the Contact Center that is able to provide Customer Sentiment/CSAT/NPR - should we still measure success with Service Level or ASA, or should we measure our success on whether the customer was satisfied no matter how long it took to answer the call? Do longer wait times actually impact customer satisfaction more than how the agent was able to address the customers issues? Do callers expect to wait in queue?
Let me know what you think.

Well it depends on the clients perspective I should say. But then if there way of checking there performance metrics is service level or ASA, I should say yes. We should have a goal as a real time analyst on what we should be prioritizing and managing everyday for us to say that we did our job well done.