You are aware that the replacement bus is in fact a regular scheduled service, the D&G route 100 (
https://bustimes.org/services/100-hanley-stone) which just happens to accept rail tickets to Barlaston & Wedgwood. Out of the two stations, Barlaston probably is the bigger business case, at least in terms of the platforms. I would imagine if Wedgwood ever saw use again, the wooden platforms would need rebuilding. The biggest issue is probably the lack of car parking available for the station to act as a railhead for the surrounding area.
As for the service frequency, wasn't it an infrequent local stopper using a 153?
(Although I fear this has probably gone off-topic about Bordesley and it getting the axe)