I assume this also means being able to create a custom smart list based on tag criteria. MUCH NEEDED! Sad to see it is not planned yet. We are adding tags...let us utilize them fully!!!
Discovered a workaround for this. I created a List called "Tags" and placed it directly under the "Completed" smartlist. I created to-do item in the List for each Tag I would like. Being a photographer, here are some of my Tags: #Shoot #Post-Production #Marketing etc. When wanting to see all of the to-do items that have one of those Tags, I just click on it. Also, and this is BIG, when creating a to-do and after typing # symbol, a drop-down list appears with all of my Tags. So, you don't need to type in Tags each time...just click on it from the list to add!!! Wunderlist can still do a lot more with Tags (like being able to create smart lists from Tags), but I'm glad there is at least some Tag functionality. Going with Wunderlist over Todoist!
I am looking at Wunderlist and Todoist. Overall I like Wunderlist more, but Todoist has tags (Labels) and a way to easily utilize them (Filters). Tough call, especially when this was suggested in 2014 and it is not "Planned".
Crazy having to resort lists. It should be automatic!!!
Sub-tasks need to be treated like tasks: the option for due dates and reminders. And the they need to show up in things like Today and Week. Another way to achieve the same thing would be to allow tasks to be nested.