Currently, Trados Studio supports merging files into one during project creation and opening multiple files in any ongoing project by simply Ctrl/Shift + clicking the files to open for translation/review.
However, in Trados Team, files can only be opened one by one in Online Editor, which is quite inconvenient/inefficient for linguistic review. This is really a big step back compared to what we already have in Studio. I hope we can have the same experience in Trados Team Online Editor as in Trados Studio. I would skip listing all the merits as you must have known better.
Please take this into serious consideration.