Things I might think of doing...
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Add a \support style task and convert
the \deliverables which are really support

Insist on a \deliverable date

Make emacs macro for input files?

Take turns to read and comment on each others sections

Add constraints section

Add labels for tasks/deliverables
   -- for schedule, think about:
      \before{task_label}
      \after{task_label}   and so on