Thanks for the suggestion @L-Spijker-0

While on the route-planning end I would completely agree with you that TomTom is a hard requirement, we'll definitely not be including TomTom routing in our initial release (and honestly, likely all future releases) of the MRA Navigation Next application.

As @Steve-Lynch mentioned, we're using HERE as the basis for the premium sat-nav-esque "Navigation" part of "MRA Navigation Next".

That isn't to say that TomTom map layers won't be possible. For those that don't know: map-layers are the way the map looks, including things like labels and colours.

So it appears that I got an answer about my observations on #1 and #2 here...

Navigation with waypoints

It appears that my observations were correct. I'm good with #1. Disappointed with #2. On the upside, it appears that #2 is going to be addressed in Next. Great.

As to #3, assuming that my observations were correct, I hope it will also be addressed in Next.

@Paul-Slater-0

There are hundreds of phone holders that will do the job.
I use the XGrip and Ram Mount Clamp below.
Like you I have a Garmin (XT) but I also like to run a phone as well when on tours as I do have a MRA Navigation subscription.
I find it useful as a back up and also for the waypoint colours.
For my Samsung S10 I have a full front and rear cover for when it rains.
I hope you find a suitable solution and have a fantastic trip in France.

Ram Mount and Xgrip.png