wrote in message
...
I worry that it will be a case of "out of the frying-pan into a storm
in a tea-cup". For all its faults the current Circle is relatively
easy for strangers/tourists to interpret. Somehow the proposed
operating pattern seems to take us into a dimension beyond the normal
capacity of the underground map to portray effectively.

Surely all it needs is a 'linked double circle symbol' [whatever it's proper
name is] - like at Baker St or West Hampstead. The upper circle would have a
pair of through pink and yellow lines, and the lower circle would have
terminating green and yellow lines. Job done...

Paul S