What I do not fully understand is that you say to plan another routing option for strict follow route (no automatic skipping, only allow manual skipping and manual rerouting around stoppages).
If you now made additonally mandatory viaPoints and optional shaping points working in the “next unvisited waypoint” mode, isn’t this already the strictly follow route mode with no skipping and abreviations?
On Sunday I have planned another 420km complex roundtrip but I avoid crossovers and also using the same road twice, because I have again 7 hot headed motorbikers behind me which I don’t want to curse my back 
. Nevertheless the route contains many theoretically possible abreviations. Will it work as expected means NO skippiing and no abreviations of the route… if I suddenly or unwillingly take a detour and am off the route, will it then guide me back to the route or skip waypoints even if I have NO shaping waypoints defined? 
Does this already work like this in 1.13.4?