to me its simple but BT clearly feel in terms of commerical value there is less of a business case.
I think some of the EO lines may passed the commercial viability tests, but in they haven't hit high priorities in terms of action. There's still a year to go, and it wouldn't surprise me to see the PCP's going in this summer, and jointers working at all the new PCP connections during reasonale weather.
However, it looks like most do need some level of subsidy, so make it into BDUK projects where they exist. Devon+Somerset's project have explicitly set the order for their work, so that EO lines are dealt with after FTTC but before FTTP and the 2Mbps basic. I guess we should expect things to be another year or two there; it wouldn't surprise me if other BDUK projects equally de-prioritised EO lines too.
The simple solution is surely to stick a cabinet outside the front door of the exchange. Or rather 2 cabinets as the FTTC cabinet has to be near the voice cabinet. The only rerouting would be between the exchange and the cabinet.
That works for short lines.
Longer lines need dealing with in a cluster - and it probably depends on the number of lines together that determines whether a cabinet placed there is viable.
If there are too few lines to justify a whole new FTTC cabinet and PCP, the other option is FTTP. That'll be harder to justify on cost grounds.