I don’t know if this is already known somewhere around here, but FYI: If you disable the today view on iPhone reminders app, the complication will open the Reminders app without the today list preselected. This comes in handy for ppl like me having a buch of lists, but don‘t use due dates in the tasks/subtasks regularly. The Step going backward from today view to list view each time when opened via complication is omitted then.