Thanks for sending your Idea in!
The MyTV feature with "favourites" & "new tonight" were on the Optik Smart Remote, but wasn't used a lot from what we saw within our usage data. But great news - the app still exists!
To access, you can browse the available shows for your HBO/Movie Central by going to:
On Demand > TV On Demand > Movies & Series “View all” > then scroll to HBO On Demand or Movie Central On Demand.
Hope this helps!