I used to use Wunderlist, but switched to TickTick at some point. Now, what I like about TickTick (I know that Todoist also has this) is that I can write a reminder and mention somewhere in it "in 5 min" or "tomorrow" and that will get recognized as a time reference and the reminder will be set up around that ref. What I don't like about TickTick is that you can't share your list with other people or family members.
What are the chances of seeing it implemented in To-Do?
Also, another idea, to be able to add an entry straight into an existing list via #listName or @listname at the time of writing an entry via quick entry (this probably only applies to mobile clients).