Then you're possibly incentivized to do subpar work the first time around to ensure a second round. On the other hand, if you push that too far it will make for

Then you're possibly incentivized to do subpar work the first time around to ensure a second round. On the other hand, if you push that too far it will make for a bad reputation. Also, if there is enough new work coming in then it's probably better to spend the time with new clients (with the aim in mind to up-sell later).