Being able to view multiple events without scrolling would be a help, e.g. by having them displayed in a seperate, read-only window on request.
A text edit would also help with certain applications, e.g. when you have events that do the same operations but to different lists of arguments and using a different variable (things similar to the image pasted above). I got a bunch of those and the whole song and dance* could be a lot smoother by just being able to make the edits in text format.
* (of making them once, creating the duplicate events, saving the file, opening it in a text editor, copy and pasting the event's operations, search and replacing the variable names, and then reloading the mission in FRED)