In my last version I had a single list of tasks, and each had a list of “excuses” which were pointers to other tasks. I had filters for showing “all tasks”, “not done”, “can be done”. The one other feature that was helpful was being able to reorder tasks.

Maybe I will get back to work on it. I thought I had found a perfect set of alpha users in the /r/productivity sub, but I’m not on reddit anymore.