Tell me where there it says how much it costs for my journey between any two stations. It doesn't. It says the 3 fare bands but how will anyone know which fare band their journey is in? Day and period tickets as well as multi modal are all there but not for people wanting to make an occasional journey.
I'd be interested to know why other networks can cope with part closure of lines for engineering but Supertram can't. Elsewhere can keep customers so clearly there is a Supertram specific issue there. It's been on a gradual decline since 2011 as well so I don't think you can entirely blame the summer closures.
2011/12 - 15.0
2012/13 - 14.4
2013/14 - 12.6
2014/15 - 11.5
2015/16 - 11.6
2016/17 - 12.6
2017/18 - 12.3
2018/19 - 11.9
Think for individual single fares most travel companies use a journey planner, have to agree the Stagecoach one isn't the best though!
I don't think most other systems have had the level of disruption from rail replacement Supertram has had, with line closures for the entire summer most years now since 2013. Passengers find other ways of travel, usually car, the City Centre with all the redevelopment that has been going on under the Heart of the City project has seen lots of new multi storey car parks built and a new section of inner ring road and not all are returning to using public transport when the tramway reopens. It is also worth noting bus travel has declined in Sheffield too.