@Lenny-O Hi Lenny,
That is not due to the Ridernav R7M: What you see on the screen of the Ridernav R7M (and all other similar devices) is determined by the app you are using.
So not by the Ridernav R7M itself, because it only shows what it is being powered by.
This has to do with the way app developers have implemented Android Auto / Carplay, as well as the limitations imposed on them by Apple and Google...
And yes, it looks different and you are missing a lot. You could try other apps and see which one you like best in combination with a display. (For example, I am very happy with Kurviger for turn-by-turn navigation, and Sygic, Google and Waze for A to B navigation. (But that up to you to decide.)
Regarding the size, I can only say 7 inches is 7 inches... and that is substantially larger than my mobile phone and, moreover, much more visible in sunlight.
If you want something even larger than 7 inches, keep in mind that it might limit your view of your motorcycle display.
And yes, the housing is larger than the display itself, but that is the case with all models and brands, so you will have to accept that if you want to do anything with it
By the way, there is only one device on the market that, according to reviewers, scores better with its specs, but it is 2.5 to 3 times as expensive as the Ridernav R7M. I tested that one too, and it works the same way.
In the meantime, I have driven 3,000 km with the Ridernav R7M and am very satisfied. I tested various other brands and models in combination with multiple navigation apps, but I found them all to be worse to bad.
(tip: The Ridernav R7M is always available for purchase with a 20 or 25% discount using a discount code)