Yeah I think they can design different styles of play for different jobs and hopefully players will try the jobs that satisfy their style most. Not all jobs need DoTs but some jobs should have them.
Like I think having a healer be this more simplified style is probably good for many people, but also clearly a bit boring for others, so they should ideally make sure there is a healer that has many decision trees (not just buttons to mash, even if the tree is a bit simple it can help feel like you have to stay awake to do what you need to do- for those who are looking for that faster / higher demand at least).