Over the long-term, you want to grow the number of your above-average customers so they make up a larger part of your customer base.
You should absolutely continue to grow your customer base as a whole through customer acquisition. You just want to accumulate more above-average customers as you go.
There is no best number of above-average customers. What is best for one store might not apply to another.
Ideally you want it high and to be growing over-time. A good segmenting system like Repeat Customer Insights should keep track of it month by month for you.
Eric Davis
Segment your customers automatically with RFM
Segmenting your customers has always been touted as a powerful marketing tool but many stores avoid it because it can be time-consuming.
Repeat Customer Insights will automatically segment your entire customer base for you based on the valuable data Shopify has already collected for you. Ranging from 5 to 30 to over 125+ different segments using RFM and other models, you can pick how much power you want to harness.