FY2017/18 Technology Program 3: Addressing technical debt
If the internal code abbreviation has to be 5 characters, tdebt seems reasonable. "techdebt" would be much clearer, if 8 characters would be acceptable. "td" would be acceptable if shortest is best.
I think this will need a new feature to work: show all tasks that are children of a task, even if they aren't all in the same project. I think the barrier to implementing this in the first place was, to try and improve performance in Phlogiston. (Similarly, Phlogiston only builds the lookup table for tasks tagged "Goal" or "Category"). Please confirm my understanding that, for this to be useful, it should be a burnup of every child that is a descendent of T174087. If so, I'll write up the related feature request.