Wyrleybart
Established Member
The Merseytravel ones also recieved big flipdot screens on the front, which assuming they weren't being washed out by sunlight, were easier to read from a distance than the tiny blinds. I'm not sure why big blinds, such as were used on buses, never caught on for the front of trains in this country.
My guess would be that it would be a very expensive mod to change train displays whereas your average Wright or Plaxton bodied box could have a considerably cheaper conversion kit to fit. Probably would come in a range and have little of the PRM bolleaux required for trains.