Enterprise: Separate logo for login page and admin interface (with additional CSS control)

[TheThing]

Title pretty much says it all. The logo on login page is allowed to enlarge and grow and take up all space which makes it look all nice:

However the header inside the admin interface is hard-coded to only be allowed to take 25px height:

Would be nice to:

a) Allow the control of having different logo between the two
and/or
b) Change the CSS for the admin interface logo.

Just being able to adjust the CSS for my logo manually would allow me to adjust it to make it fit

.hs-overlay .px-8 img {
  height: 100px;
  margin: 0 auto;
}