I find data viewer to be an essential tool. It can probably be improved in a number of ways but in my opinion it has one big problem as it is. When dealing with huge data structures it slows down the process because it always shows all the information. Most of the times that is information isn’t used since it is possible to understand what is going on from the first lines. I think one simple change could be to be able to set a limit to the list length in some way. Item quantity, tree depth or any other criteria that limits the amount of items displayed can speed up the process. Alternatively there could be a “show more” button to manually display the hole list when required because sometimes it is needed.
bye and stay safe!