Haha thanks. I was thinking of adding a gear slots column, but that gets too complicated, plus the gear just comes out in the stats columns.
Since making the spreadsheet I've discovered this website: http://www.swgohcantina.com/, which compiles a lot of what I would have wanted to see, but my spreadsheet was supposed to be more of tracking your personal progress.
It was a personal project to help me keep track of everything, so maybe it'll help someone else get organized, cause there are quite a lot of heroes and drop locations to keep track of.
