I still can't find any option to change sorting options.
You can change sorting by creating categories of lists, rather than putting everything under their default category called "Reminders." I ignore than category and only use the ones I created (Projects, Agendas, Anywhere, Calls, Computer, Errands, Home, Office, Waiting For, Someday.)
We have it in our queue to create a GTD & Reminders Setup Guide. No date on that, but it is in our queue.
Too bad categories from Outlook Tasks don't show up in iOS Reminders.