A commonly suggested habit for those with ADHD is to make a single (main) ToDo list and a single calendar. Your app already does a nice job for that.
The next step in the best practise for that habit is to plan/schedule the completion of your (important) ToDos for certain days.
That is a feature I have not yet seen, and would love to have added:
Is that not what we can already do?
What bothers me, is the fact that tasks from the to-do lists get moved to that date, instead of getting copied.
I would much rather leave a copy of the task in its to-do list, in case I miss it. Right now you have to manually make a copy and then move the copy to a date.