Request stops

We are aware of problems on evening services northbound at Yorton, Prees and Wrenbury, when these have been request stops. The request to stop is no longer booked, and is no longer offered. TfW say this is because they have to use one door on a short platform. This happens on the Cambrian line and in N Wales too. However other companies have found a solution to this, but TfW appear unable to resolve this. Perhaps they should talk to Great Western, Anglian Trains or ScotRail. If thy can do it, why can’t TfW?