Feedback/Request regarding Sublists

Hi! The newly added group by sublist and boards feature is really great.

A few feedbacks and requests regarding Sublists I hope you will consider.

1. Currently, one can only move tasks from one sublist to another. If I'm viewing a particular sublist and want to quickly copy a task over to another sublist I need to go back to the main list, look for the task then move it to the relevant sublists. This is a lot of steps. I wish there was a quicker way to do this from the sublist itself. Perhaps, option drag to copy and normal drag to move tasks from one sublist to another.
2. Manually Moving subtasks up and down within a sublist moves them in and out of their parent tasks and into parents of other subtasks. This becomes a real problem especially if the sublist is shared with someone else and they move the tasks around. The whole context of the tasks get messed up. Since we can group by sublists now this feature should be changed in my opinion so that tasks maintain their master hierarchy irrespective of how we arrange them within the sublist.
3. When grouping by sublist in the main list it would be very convenient to have "none" at the top instead of at the bottom. It would be much easier to sort tasks into sublists. Currently, if there are a lot of sublists then one has to scroll right to the bottom and then move them around.
4. A filtering by sublist option would also be great. This would help to quickly find tasks not belonging to any sublist.

Thanks

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