I suppose for long distance travels such as "Berlin-Ulm" or "Hamburg-München" hardly anyone would choose walking or cycling as means of transport.
Even for the considerably shorter "Berlin-Potsdam" the 'walking'-option seems far-fetched in most cases and even cycling will be only occasional.
Therefore it would be nice to have the option to set a threshold for distances up to which these means of transport are displayed in the results. Ideally in the results view there would still be a toggle switches below the routes to give the user the option to display 'walking' or 'cycling' nevertheless.
Of course these are just my suggestions and they'll need to be discussed by the team!