If I were designing a stoppage app the primary purpose would be to report on existing stoppages, and use a map as well as search by waterway name as the current one does. The technology is all there, and that to me would be very useful. Of course it would still be flawed if the stoppage database is not be up-to-date, as it seems with the Minworth stoppage this weekend just gone. Perhaps CRT also need and internal app to allow those on the ground to easily update the stoppage database outside office hours.
It is a natural progression to allow the reporting of issues by registered users in a stoppage app, that is going to be particularly useful out of hours I would have thought. The current 0800 number to a call centre does not seem to always work well. Also I do find it annoying that they will not publish the regular number behind the 0800 one, forcing those reporting issues, who are inevitably on a mobile phone, to pay for the call.