Hello David,
It is now possible to sort displayed tasks by either due date or alphabetically (in addition to the default order).
The sort options are in the bottom right hand side of the "Display all tasks as a single web page" panel (which is displayed once all the tasks have been retrieved from the Google Tasks server).
Note that when sorting by any order other than the default order, subtasks are no longer indented, as the relationship between parent and child tasks no longer holds when sorted by a different order.
Please feel free to provide any feedback.