This needs a live version of each board shown online. This would give you an idea of the utility. So, right now, the UK rain map should be pretty idle since it is a very sunny day, at least in the south. The tube map should be something you can watch for a few minutes to get an idea as to how it updates itself.
The Boston board has the station names etched onto the board. Clearly the London large board could have some names etched in. London has a lot of tube stations though so this could result in a lot of visual clutter. But trains do have their destinations and 'via' on the signs, e.g. 'Cockfosters via Bank'. The names of the termini stations (e.g. Paddington, Liverpool Street) as well as the end destinations (e.g. Morden, Richmond) and major intersections (e.g. Oxford Circus) could be provided, making the map a bit more inclusive and usable for those that don't have the map etched on their brain.
The Boston board has the station names etched onto the board. Clearly the London large board could have some names etched in. London has a lot of tube stations though so this could result in a lot of visual clutter. But trains do have their destinations and 'via' on the signs, e.g. 'Cockfosters via Bank'. The names of the termini stations (e.g. Paddington, Liverpool Street) as well as the end destinations (e.g. Morden, Richmond) and major intersections (e.g. Oxford Circus) could be provided, making the map a bit more inclusive and usable for those that don't have the map etched on their brain.