As I’m using existing report viewer to list data exports we don’t have much options there. I increased font sizes a little bit. If it gets a lot of requests we may implement a separate UI for data export selection.
I think that wouldn’t work so well with data exports. Usually you wouldn’t want/need a preview also, the data that is being exported if in JSON or XML format would be unreadable to the average user and just add confusion.
I am ok with how it is currently but agree when you have many data exports, they are quite squashed together so the larger font size would work, if a bit more line spacing is possible would also be good. At the same time though this is something I brought up a long time ago when data exports were first introduced - it isn’t so obvious I felt that clicking the data export would run it immediately and also wasn’t obvious that it will follow the same date range / work period as defined with the report. I honestly never thought more about it though, but a bit of text above the links clarifying that fact might be useful for new users.