I am on holiday now and want something similar. Get me from A to B but with a memorable heuristic that I can use if I leave at any time. E.g. "if you catch a 134 or 175 bus to Kings station then get the metro 3 stops to Cental station.". Even better if you add some landmarks.

This may exclude some clever routes that shave off 3 minutes if you do the correct parkour... but it means I can now put my phone down and enjoy the journey without tracking it like a hawk.