While Adobe is working on exporting more than the 400 rows in a Workspace freeform table page, this doesn't take care of the displaying of that data. Workspace can only show 400 data points or less in a chart visualization. Reports & Analytics can show an (virtually) unlimited number (e.g. days). We use this to spot larger trends or to zero in on when a given event might have occurred.
There should be a way to select how much of a data set is displayed in the Visualization Settings, perhaps an additional drop down like the rows displayed (e.g. 1, 5, 10 ... 400) with Complete Data set selection added at the end.