I will try asking the Council highways guys for their borough-wide strategy for deciding where to put these (neon smillie speed recorders), and whether/how they monitor the effectiveness of each deployment.
I'll also suggest putting one, at least for a time, on Perry Vale outside the station entrance.
If these devices also record the amount of traffic then I think that could provide very useful information, that could then hopefully be acted on.
My experience is that in the mornings before 9.00, the traffic is often heavy enough to be a continuous stream and you can only get across PV if someone stops for you - and to be fair a significant number do. But traffic is only going to give way at a recognised crossing point.
Like these useless speed cushions, what is outside the station is neither one thing or the other. It sort of looks like a crossing to pedestrians, but not to traffic. That is not a good combination.