Bletchleyite
Veteran Member
What do you think is poor about the OBS compromise? [genuine question]
They don't really appear to serve much of a purpose. They walk up and down the train looking bored and forlorn, only coming into use in the unlikely event of a wheelchair using passenger (who could be boarded by platform staff at many stations).
They may be useful in event of an incident as a second member of staff, but they give the impression of being there "just in case" rather than being particularly useful most of the time.
And, of course, they are a second member of staff, which means no money has been saved by switching to DCO.
So basically they have most of the disadvantages of guard operation with almost none of the advantages.