I'm required to submit reports in excel so one of my favorite features is the "open after executing" option on the XLS node. It's a minor peeve of mine that it is in the old XLS format which only allows for 64k lines. The result is sometimes I have multiple tabs I need to append together in my final report.
CSV doesn't have this problem, however I can't "open after executing" the CSV's.
I wish it would just support the large sheet format that modern XLSX uses...