@Horizontal_2 Back when I used Suunto Ambit, when I went off route it would always automatically zoom out to keep the original route in the view so that I knew which way to move to eventually merge into the original route
In fact I remember that once on a pretty steep mountain terrain we went into a wrong gully on a downhill and realized that only a few minutes later, and it would be too much effort to go back up because the terrain was very steep so we decided to keep going down hoping to eventually merge back, which we did.
So I think at the minimum the watch should do that, and additionally there should be an arrow around the screen edge pointing towards the closest point on the original route.
Furthermore even if there is no automatic rerouting through the phone, which cannot be done reliably when off grid, the watch must be optimized to assist with manual visual rerouting, which means an ability to see map details at higher zoom levels. Then you basically simply zoom out and look for opportunities to merge back at a later point. That shouldn’t be hard to do even on a small watch screen and I’ve done that successfully many times on Garmin Fenix and even on Suunto Race before the maps were “neutered”.