Current dependencies feature is OK, but the real use case for us is for people to look at the sprint and need to know what to do first or what to watch to know when their task is ready to start.

Our suggestion would be to put a blocked indicator on the card (possibly red color) that has a mouseover to tell you what task is blocking it. The top blocker should have a different indicator (maybe same icon in same place, but green instead of red?) so that it is obvious what needs to be done first when you look at the wall.

We have also found that sometimes tasks will not let you move card forward due to dependencies (sn attached) which we think is good - but other dependencies tried, both of the tasks moved anyway so not sure what the 'block' actually did.