Is ngnix meechum module planned?
Ans: No.

How we customize/change the icon shown in this login screen for the “telescope” Edward app?

We have some custom styling override options available today. The login page already loads (or tries to load) the following css. if you want to provide a logo or other style changes, we can drop them in place pretty easily

<link rel="stylesheet" href="https://assets.meechum.prod.netflix.net/common/css/app.css">
<link rel="stylesheet" href="https://assets.meechum.prod.netflix.net/telescope/css/telescope.css">