Road routes (relations with route=road) are quite common in OSM. It would be nice if these can also be validated by OSM inspector. I think it is mainaly gabs in the order that needs to be searched for.
I think the best option is to add a new view for it (in the same dropdown where you now select for for example "routing" or "public transport").
I hope you can consider it because it would help validating those relations a lot.