For me, it would all depend upon the topic that the team has chosen to present. Most people prefer to work alone when it comes to their dissertation or PhD thesis. It is simpler for them to work that way because everything gets done on time. Working with a team means having to balance different free times to work on your dissertation so it would be better if they just worked on it individually. However, having a research team ready to help you would be appreciated. Remember that serious professors have writing and research teams at their beck and call. Making sure that their team works on the same page. So what I am trying to say is, if the professor can do it, so will you.
The opinions are that of the author's alone based on an individual capacity. Opinions are provided "as is" and are not error-free.