Since end of June, all the town services now have SB prefixes, and just last week the SB6 route was altered, and SB11 introduced with the Mon-Fri SB10 withdrawn. That aside, the underlying issue seems to be that neither council officers (and councillors), nor the bus operators, have the technical awareness to know that these things need to be considered, or the skillset to make changes successfully.
Suggest you contact me directly through BUGS - Bus Users Group Stevenage [sg1bugs on FB, Insta, Twitter], or secretarybugs@gmail.com so we might take this forward, perhaps with a view to establishing a formal arrangement for the work involved?
Kind regards, David

Hi LordGarySugar,
The amenity=bus_station tag was removed from the former bus station site, which has now been demolished. That site is currently undergoing redelvopment and it's new name shall be announced in September. There are multiple changes to bus network provision in relation to the new interchange and these shall all need reviewed as a result of the changes which have taken place. Our local bus users group is advising it's partners within the local councils and bus service operators on the changes it needs to make, and errors which need correction. This will include removal and/or amendment to the relationships the old terminus had with the old routes. In due course, when updated ariel imagery becomes available, the buildings, roads, pathways and landscaping can be more accurately shown.
Regards,
David