I really don't have any good solution for the issue with subtasks when using
GogTasks/Outlook. It's a limitation in Outlook that there's really not much
to about from my point of view. Only thing I can think of is to disable
order synchronization, which will mess up the sub-tasks trees. GogTasks
Settings form > preferences > check "Do not sync the order of the tasks".
There is no "GTD for Outlook" as far as I know. But if your goal is to view
the task tree as it is on a personal computer, you could always use the web
interface at
http://mail.google.com/tasks/canvas . But I guess you want to
use Outlook for a reason - as most of my customers do :)
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