Please allow us to personalize the domain used for the out of box Preference Page in D365 Marketing used for Real Time. In outbound marketing, the subscription center page was hosted by the portal that was setup with D365 Marketing and we could personalize that.

For example, instead of "https://public-usa.mkt.dynamics.com"
We could use "https://preferences.companydomain.com"

This is essential these days when customers are looking for phishing and other scams. They want to see the company's domain that they know and trust.