I'm not personally against next stop announcements, but I do have to question how beneficial they actually are, especially in my local area, under Arriva.
The announcements are too quiet to hear over the noise of the engine and various ADL/Optare rattles and the screens are too small for anyone without 20/20 vision to see, it seems to be more of a box ticking exercise...
This sounds like a set up issue as the guidelines are pretty specific about volumes. Screen sizes also should be visible from a certain percentage of each deck.