I noticed that a recent PR introduced interface improvements for the M2A Relation. However, I’m unsure if similar enhancements are planned for the Display tab or if this functionality is already supported.
Mind pointing out what kind of improvements where done to the M2A Interface as the options look exactly the same as they did 2 years ago. 
@Nitwel Sure thing no problem, I think It was improved by this PR in version v11.4.1
And my issue now can be represented like this:
This how it appears in the interface which is great
And this how it displayed
Plus the display for the M2A doesn’t work for me in the calendar layout
There is definitely room for improvement for the displays interface but there is currently nothing planned as far as I’m concerned.
Normally you’d create a discussion on GitHub to ask for improvements/new features, but as this pretty straight forward, I’d say go ahead and create an issue on GitHub that states what kind of improvement you would like to see and how they should work.