Give us a whitelabel client url that we can share url directly to client. That will be quick and easy client releation for us. Client can see their metrics as we see in dashboard. we can create reports also but that will be much easier than report. (for agencies and for clients)
Embeddable link even will be enough.. There is no need custom cname. Just a clean whitelabel (logo) dashboard! URL no matter what. We can embed this to our website page for present to client. This is much slightly solution for client area. Hope you can take attention to this.