The "One" model, the one that Glenn used in Sardinia looks like this:
I do agree the app is, stil today, somewhat improvable (do you want a new app designer, Beeline???

). But given how these things go, wouldn't surprise me if they are refining a "next" version and do a rollout for a complete new/refined app soon-ish.
Especially when you split the device between motorcycle and pushbike use, there is quite a lot to make better (and clearer) in the app.
I do not pay the subscriptions because my use for it is mostly short trips within London or the random errand here and there. I'm ok without the audio/extra perks.
I do bring it with me when traveling (in my backpack – I'm not an Uber driver with dual GPS). Been useful this summer for Hotel > Restaurant trips for dinner without having to faff with the larger XT once off the bike.
Within large cities, I'd say that the OpenMaps routing works better than Garmin's algorithm. And this is another reason why I got it.
I really wish it could integrate with, say, Waze and get its user-based speed camera/alerts info.
It is an extremely good device (the II). I really appreciate the work they put into keeping it simple and minimal.
Just treat it as what it is. Do not expect a full cartographic GPS, as clearly it isn't and doesn't aspire to.