Indicator for Sub-Tasks

Right now on my board view, a task without subtasks and a task with look exactly the same. This feels wrong.

It seems like there is another nearly identical thread titled “subtask status/indicators in boards” Subtask status/indicators in boards - #33 by Marie

It also seems like this has been a popularly requested feature for over two years. Are there any plans to add this feature in the next 3 months? And if not, how come? Design choice? Not enough developer bandwidth? Not high priority?