Thank you for the reply @Frank-Scheffler. How is the overall scale on the Carpuride under Android Auto? I have a friend with one, though he uses an iPhone, and he's happy with it.
Testing the Evkey L200 with my partner's iPhone, though only with Google Maps and it looks great. Google Maps under Android Auto is better but you do need to zoom in and the icons, controls and everything else are still too small. That's not the point though, I bought it specifically to use with MRA Navigation Next.
The issue, for me at least, seems to be one of default scale across the board on the L200. Ideally there needs to be a solution from the screen manufacturer, though I doubt very much that'll happen.