"Table View" of Documents
As some others tools have, a way to view all documents from a collection in a table format with columns and lines. An 'click on header for sort' is well desirable.
It's also useful to have different background color for different data types, Navicat has this.
Without this, most of us will simply not use VS Code with MongoDB. Compass already contains this feature.
In other words, having this feature in VS Code would be an excellent incentive to stay in VS Code.
I would also consider managing the header by D&D and an option for hiding "columns" in order to pre-format the data prior to performing an export into csv/excel format.