I feel like in terms of configs the Miramar could go for a total overhaul The Moonhawk for now at least could go for a refresher.
Tbh, both are in similar situations. The Miramar was added in late 2015 with update 0.5.4, which was 8-9 years ago. Since then, it's been treated much like the Moonhawk, periodically getting some new content over the years, but never getting anything major. It, the Moonhawk, Sunburst, and Burnside are all in the same boat for a full remake in my opinion. The only question is when they'll get remade. For now, let's just hope we get a teaser tomorrow to give us all something to speculate about.
And if we search about the first implementation of the Moonhawk, we can see this last was added in 2013. The Burnside also has been added in 2015.
I fear that the devs are going to be a lot less revealing moving forward from what I have heard and seen